AZ, ASU, Utah, and CU need to get out now. Oregon and Washington will prefer to keep the PAC 12 together until big 10 comes calling. Those two also don't want to lock themselves in a GOR with the new Big 12. If I were the 4 schools, I'd leave now as they have the leverage to leave Oregon and Washington stranded....thus being forced to follow the 4 into the Big 12.
What a time!