Big, the apocalyptic matchup of Alabama and Auburn in the Final 4 only takes place if your team takes out Wisconsin. If that happens, we will have a realistic shot whatever Oklahoma does. As RGW said, the best way for us is to win out. If we do that -- and your team does the same -- the Bucks may get a last-minute invite.
If Oklahoma and Wisconsin both drop a game, Alabama only gets left out if you are blown out by Auburn. If only one of those two drops a game, you are still probably in, but you would need for the loss to be very close. If both win out, Alabama would be out even if you lost in triple OT to Auburn.
ETA - the only games that should matter to Alabama from here out are the games in which it plays, and the games played by OU and Wisconsin