If that happened, Nebraska and Missouri would likely go to the Big 10, but the Big 10 wants Texas, too, and if Texas goes somewhere, they'll bring Tech, the Aggies and Oklahoma with them.
In either scenario, Baylor, Iowa State, Kansas and Kansas State could be on the outside looking in. It's all about money. The Pac 10 and Big 10 pays each school between $10 and $13 million more a year than does the Big 12.