Sorry to you. The BCS has a contract with the Coaches' Poll to vote the winner of their championship game #1. The BCS wanted to get one with the AP, but the voters wouldn't go for it. By the way, next time you go to a Vols game, look at their BCS trophy. It says right on it USA Today Coaches Poll Champion.
the contract first of all calls for a matchup of its top 2 teams to determine the champion in a championship game. the pac-10 agreed to this when they joined the BCS. if thy are not in that final game they have no claim to a title. simple enough.