I think SEC would abandon MU in a second if VaTech wanted to join, a presence in the scared home of the confederacy and all that.
The ACC actually reacted in a defensive manner by upping the buyout and adding teams. BigXII is slow and dumb. It makes poaching the members all the easier - also says to the ACC people, Hey we are going to do this, so, like, seriously, we will do it. If you want to come, seriously, like this is going to really seriously happen with, uh, MU so, yea! Hurry!