I still think that the winner of Ohio State-Michigan State will have to pumpkin-up big time in order for the Ohio State-Michigan game to have any meaning in the standings for the East. Let's say 50/50 chance that Ohio State beats Michigan State, and 50/50 chance for each to win all other games. (Let's also just say with 100% certainty that if either team loses another game, it is only that one game.) So excluding Ohio State vs. Michigan and Ohio State vs. Michigan State, Michigan State has a 50% chance to be 7-0 and a 50% chance of being 6-1, and Ohio State has a 50% chance to go 6-0 and a 50% chance to go 5-1. Add in the 50/50 game for Ohio State vs. Michigan State, and Michigan State has the following chances for each record:
25% chance to go 8-0
25% chance to go 7-1, losing to Ohio State
25% chance to go 7-1, beating Ohio State
25% chance to go 6-2, losing to Ohio State
Along the same lines, Ohio State has the following chances for each record (again, keeping The Game out):
25% chance to go 7-0
25% chance to go 6-1, losing to Michigan State
25% chance to go 6-1, beating Michigan State
25% chance to go 5-2, losing to Michigan State
So if Ohio State loses to Michigan State, Michigan State has a 50% chance to be 8-0, and a 50% chance to be 7-1, with the tie-breaker over Ohio State. Ohio State of course has the one loss, at the least. Michigan State is in.
If Ohio State beats Michigan State, Ohio State has a 50% chance to be 7-0, and a 50% chance to be 6-1, with the tie-breaker over Michigan State. Michigan State has the one loss, at least. The only way Ohio State can lose the lead for the division is if Ohio State was 6-1 going into The Game, and they lose that game, AND Michigan State only lost to Ohio State.
"Inexplicable" losses are to be expected. But remember that those same "inexplicable" losses can happen to Michigan State, too. And the winner of Ohio State-Michigan State needs to have TWO inexplicable losses in order to not win the division.
....Or.... figure out a way to have a 3-way tie, and I believe that the team with the best BCS ranking (or whatever ranking they're going to use this year for the playoffs) gets into the championship game. So who is going to tie with Ohio State and Michigan State? Michigan? Penn State? Rutgers?