Upon further review, Garrett Nussmeier was much less bad than I had thought initially Saturday. The bigger problem was that he never had anywhere to go with the ball and Alabama played a great game of coverage.
Because LSU can't run, they kept both Safeties free and it became impossible to figure out what coverage they'd be in both pre and post-snap.
Here Nussmeier sees the corner turn to match the post like he's playing Cover-3, but he falls off after the ball is in the air as they shift late into 2-Roll (Cover-2 variation).
Can't blame Nussmeier for this one, it looked open, but it's so much easier to play coverage when you don't need one of the Safeties in immediate run support.