Mr. Hockey is right. Only the coaches poll is required to award the BCS title game winner the top spot. The AP poll can do whatever. If Nebraska had beaten Miami in 2001, there's a good chance the AP would've voted Oregon into the top spot.
As much as Scott's homer bullshit has turned me against USC this year, I would love for a split title, if for no other reason than to further tarnish the joke that is the BCS.