Someone correct me if I'm wrong but the simplest route is for us and Baylor to win out and K state to lose once.
OSU
KU
WVU
OU
KSU
UT
WVU
TTU
ISU
Rapelor
TCU
OU
UT
KU
UT
KSU
ISU
Rapelor
TTU
ISU
UT
KU
KSU
Rapelor 5-0
OU 4-1
KSU 3-2
ISU 3-2
UT 3-2
OSU 3-3
TCU 2-3
TTU 1-4
WVU 1-4
KU 1-5
I would imagine all three of the mentioned teams would be favored in every game, except one.
We would be 6-3
Rapelor would be 9-0
KSU would be ??-3, we win head-to-head tiebreaker
OU would be ??-3, we win head-to-head tiebreaker
UT would be ??-3, UT would win head-to-head tiebreaker, they would need to lose 2 games
ISU would need at least three losses
A whole would have to happen for us to make the Championship Game. It's possible, but the chances have to be very, very low.
I could see 2 more losses for UT. Then an underdog has to step up and beat one or both of KSU and ISU.