With a 9 vote gap between USC and Michigan, if the Trojans win out, I don't see Michigan being able to stay even in the polls or BCS. Unless Notre Dame or UCLA beats them, I think SC will pull ahead when all is said and done.
When the BCS poll comes out in a couple hours, USC will definitely be #2. The AP Poll is not used as a component in the BCS calculations, and with their leap in the Coaches Poll, it's a certainty.
The Irish won't roll over for USC, and it's doubtful UCLA will, either. But if USC gets through those teams, they'll be playing OSU for the title in January.