Michigan's defense didn't do much right against Wisconsin. They couldn't stop the run despite Wisconsin passing a grand total of one time in the second half, and couldn't stop either in the first half. And while some of this can be attributed to the dearth of talent on Michigan's defense, a fair share of blame needs to fall on the defensive coaching staff (per usual). But at least once, the coaching staff designed a play to get a free blitzer on Scott Tolien.
The defensive coaching staff deserves credit when they do something good. This is just such a play. While a lot of the defensive struggles this year can be attributed to schematic breakdowns brought on by poor play design, this is a play in which the coaching staff was able to manipulate the offensive line with a zone drop and get a free release on Tolzien despite blitzing five men against six blockers.
This worked because Michigan was willing to sell out on the blitz and live with whatever happened, good or bad. The only way Michigan can realistically run plays like this is when they get teams in third-and-long situations: if Wisconsin gets a big completion here, it's just a first down, something that Michigan's base defense is unlikely to stop anyway. But given the potential that the blitz brings, this play becomes a really good call in this situation. Why the defense doesn't try similar plays more often or simply blitz linebackers more frequently is beyond me. Sitting back and waiting for quarterbacks to pick apart Michigan's defense is just as dangerous as selling out on the blitz--it should be noted that if Michigan had more talent on the defensive side of the ball, this likely wouldn't be true. If Michigan wants a chance at beating Ohio State, running complex zone blitzes like this, and landing them, will be essential.