A couple of ways to break it. First the realistic way:
UM (or preferably several ACC schools) announces in the next few weeks it is in talks to leave the conference. Doesn't even have to be true. If UM says it is planning to leave for the B1G, the SEC may make a counter offer (if announce leaving for SEC, then vice versa) . It starts the bidding wars. That also signals to the other schools the ACC is a dying conference. ESPN is the key player, I think they'd love to dump the ACC for an expanded SEC. If the biggest acc draws all say they are planning on paying the buyout, forfeiting the TV rights per the current agreement , and leaving the acc (again, doesn't have to be true), espn may demand changes to the TV deal and will be jump at the chance of canceling the deal. Basically, the threat of leaving gives ESPN the out it absolutely wants, and then espn does the dirty work for UM and terminates the TV deal. No TV deal means no conference. No conference means no grant of rights. Have to play dirty, but this is a game of life or death.