It was mainly about what happened in the Giants, Packers and Vikings games. I'll share the relevant quotes from the Corbin Smith article...
New York...
Starting off 1-3, New York ranked in the middle of the pack in most defensive categories, including sitting 15th in rushing yards allowed per game (118.8). Back in Week 2, Washington ran roughshod on Shane Bowen's unit, racking up 215 yards on the ground, suggesting Seattle would be able to find success with the duo of Ken Walker III and Zach Charbonnet.
But Grubb didn't seem to get the memo, coming out with a pass-heavy game plan against a defense featuring talented edge rushers in Brian Burns and Kayvon Thibodeaux as well as All-Pro defensive tackle Dexter Lawrence. While Smith completed nine out of 14 passes for 97 yards, the Giants harassed him with frequent pressure and play calling did him no favors as they ran 15 pass plays on 17 offensive snaps.
"He thought he was facing Stanford or something," a team source remarked, harkening back to his time dominating Pac-12 competition. "His confidence in his quarterback wasn't misguided, but he took one of our best players out of the game with his own stubbornness."
Knotted up at 10 apiece at halftime, Macdonald implored Grubb to get Walker more involved in the second half after Seattle mustered only three points in the first two quarters on offense. But two plays after Smith connected with Tyler Lockett for a 33-yard completion to open the second half, Metcalf fumbled on a quick reception, setting the Giants up for a Daniel Jones touchdown pass.
From there, even with the Seahawks only trailing by seven, Grubb became trigger happy, calling five passes on six plays on the next drive as they were forced to settle for a Jason Myers field goal. On the ensuing possession, facing 4th and 1 in Giants territory, he dialed up a play action pass rather than trying to run for the yard to gain, but Burns didn't buy the fake and devoured Smith for an eight-yard sack to turn the ball over on downs.
By the time New York iced the game with a blocked field goal returned for a touchdown in the closing moments, Smith had dropped back to throw 47 times while Walker had a total of five carries for 19 yards and Seattle had ran the ball a total of seven times with running backs. Completely abandoning the run game in a close contest, Grubb called pass plays on a stunning 87 percent of the team's snaps, leading to Smith being sacked seven times.
Following the game, Macdonald met with Grubb one-on-one, speaking with him on the one-dimensional approach that he felt cost the Seahawks a winnable game with the offense contributing only 13 points. The coordinator took the blame for the lack of balance four days later, particularly lamenting his inability to get Walker more involved.
"That's 100 percent on me," Grubb said at the time. "And my job is to make sure I get all our guys in the best position possible to win the game, and I didn't do that."
As a first-time NFL coordinator, Macdonald hoped that misstep would serve as a valuable lesson for Grubb, showing him that he had to adapt his philosophy to be successful scheming against the best defenders in the world. However, frustrations would only continue to grow, putting the two coaches on an inevitable collision course as they tried to navigate their differences.
Green Bay...
Meanwhile, with a more balanced offense benefiting the quarterback and taking some of the burden off his shoulders, Smith didn't throw an interception against the Jets or Cardinals in successive wins, and the Seahawks finally looked to be on the cusp of playing to their full potential.
But those improvements proved to be little more than a mirage masked by playing inferior opponents. Starting with a prime time home game against the Packers, Grubb reverted back to his prior ways, inexplicably calling 12 consecutive pass plays after backup Sam Howell checked in for his first game action of the year in place of an injured Smith early in the third quarter.
Not surprisingly, asking Howell to put the offense on his arm behind a struggling offensive line yielded mostly disastrous results. While his third drive ended with Charbonnet ripping off a 24-yard touchdown run to bring Seattle within 10 points early in the fourth quarter, he completed just four out of nine passes for 19 yards and took two sacks on 12 drop backs with his play caller hanging the young quarterback out to dry.
After the Seahawks forced a three-and-out with 10 minutes left in the game, Grubb promptly called three straight pass plays, leading to a quick punt. On the next series, Howell threw a horrible interception telegraphed to linebacker Edgerrin Cooper, all but ending the game.
Much to Macdonald's dismay, Grubb didn't give Charbonnet another carry after his long touchdown run even though Seattle had 10 minutes left to try to get two scores. Though both coaches had a quality working relationship, their differences in how they wanted to approach things on offense continued to create challenges during games.
Minnesota...
With the "marriage already on the rocks" according to a source, Grubb put the dagger in his chances of returning as offensive coordinator the ensuing week against the Vikings, this time failing to meet Macdonald's standards from a time management and game flow perspective.
After Sam Darnold escaped the pocket and found star receiver Justin Jefferson for a 39-yard touchdown to put Minnesota back in front 27-24 with under four minutes to play, Smith hooked up with tight end Noah Fant and running back Kenny McIntosh for 18 and 15-yard completions on successive plays, driving Seattle down to the opposing 37-yard line with 3:09 left on the clock.
Already in field goal range for Myers, Macdonald wanted to start bleeding the clock to the Seahawks advantage, hoping to eventually force the Vikings into using their timeouts as they positioned themselves for a tying field goal or a game-winning touchdown. But Grubb called another pass play out of shotgun, allowing linebacker Andrew Van Ginkel to crash the pocket and sack Smith for a six-yard loss.
An incompletion and one-yard pass later, Myers came up well short of the uprights on a 60-yard prayer in overcast, damp conditions, turning the ball back over to Minnesota. After the game, Macdonald called out Smith for taking the first down sack, but behind closed doors, he continued to bemoan the lack of balance and missing out on an opportunity for a big win, screaming at himself moments after exiting the podium in his post-game press conference.
https://www.si.com/nfl/seahawks/seahawk ... ryan-grubb