Holmoe and the WCC comish were clear that this was a long-term deal. It does no harm to park bball and olympic sports in the WCC for a few more years then integrate them into the Big 12. That would piss the WCC off because a lot of time, effort and money goes into letting BYU in the conference.
The only way I could see it happening is if we had an out clause that paid the WCC a nice sum of money that would make them happy to let us go.