It's easy to blame the coaching for the pedantic offensive performance, but it's just as important to give credit to the defensive playcalling and coaches for a sound game. While the offensive playcalling was once again blind to context, many of the actual plays were designed well. It's difficult to determine who gets blame when a play breaks down, but it's not entirely Musgrave's fault that the offensive line could not protect Christian Ponder. The depth of routes was a serious problem, but the pieces on the field sometimes could not genuinely outperform who they were lined up against.
It's difficult to understand exactly why the offense kept throwing the ball in the fourth quarter with a two-possession lead to protect, particularly when Adrian Peterson had been averaging above eight yards a carry. While it makes sense to save the playmakers from having to work too much with a Thursday Night Football game coming up, the play design is still baffling—there's something to be said about winning the game at hand, too. That said, Alan Williams has kept the defense in multiple sets, making them unpredictable, even late in the fourth. The gameplanning by Williams paid off in the form of late game sacks.
For the most part, the Vikings hadn't made any effective adjustments to take advantage of some of the miscues by the Cardinals, and they've taken out playmakers when they might matter most. The gameplanning and playcalling have not been context-sensitive or responsive. The defensive playcalling has been fine, but the offense has sputtered for more than just bad quarterback play. Play design hasn't really been a problem for the Vikings, but the choices the coaches make are baffling.
Again the victim of execution errors, this time largely by the offensive line and Christian Ponder, the playcalling has neither been extraordinary nor damaging. Responsible for the odd ten men on the field issue, the Vikings have been sloppy—a problem largely attributable to the coaching staff. Neverthless, the players haven't allowed momentum-changing plays to get them down, and they've been able to control their own narrative.
The defensive and offensive errors had largely been due to execution errors rather than play design, and only a confusing short play on third and twelve marred an otherwise good performance by the coaching staff.
Better work by special teams to give Harvin and Sherels space to work with has helped the Vikings gain field position without having to worry as much about their inconsistent offensive performance.