I believe that football success comes in cycles, and following such logic that tells us that inevitably OU and texas will not rule the Big 12 forever.
     This season that has come to pass, with kansas and mizzou the two teams with the best records and the front runners OU and texas hopeing to spoil their BCS dreams in the title game, this was not unexpected but the teams that have accomplished it are not who you would have expected coming into the season and also note if you will the teams that have beat OU and Texas (TT, CU, KSU) are not even in Championship consideration.
OU has managed to get through their schedule relativly unscathed mostly due to luck (like having mizzou at home this year)but as this road loss at TT tells us, the dynamic is shifting, how it will shift only time will tell, but for OU fans it is not for the better.
Unfourtunatly the North (and the bottom of the south) has said "No means NO" to a one sided Big 12, and I forsee the North rising again next season as well.