I edited my post. See above. Basically in addition to winning out, we need Kansas State to beat Baylor next week. If either of those things doesn’t happen, we’re eliminated. Beyond that, it’s complicated.
Say ISU beats Oklahoma, and Kansas State beats Baylor to keep our chances alive. We’ll want Texas Tech to beat Oklahoma State to increase our chances, but if the Cowboys win, we might still be ok. In the final week (assuming OSU beats Tech next week) we would need to beat TCU, have Texas Tech beat Baylor, and have Oklahoma State win Bedlam. This to me seems like our most realistic path.
But say Tech does beat Oklahoma State next week. Assuming we don’t get eliminated by losing or by Baylor beating Kansas State, we would have a couple different paths the final week. One would be beating TCU and Tech beating Baylor. Bedlam would determine our championship game opponent. The other path would be beating TCU, Oklahoma winning Bedlam, and Kansas State beating Texas. This path would allow us to survive a Baylor win over Texas Tech. (Kansas State needing to win out in this scenario is about making sure they’re one of the teams tied for 2nd at 6-3 with OSU, ISU, and BU. They and BU would be 1-2 against the other tied teams, ISU and OSU would be 2-1, and we would have the tiebreaker. If KSU were to lose to Texas, only ISU, OSU, and BU would be tied. We’d all be 1-1 against each other, so it would move to the next tiebreaker, which would eliminate OSU due to record against the 1st place team, then Baylor would be in over us due to head to head.)