This is pretty much what I said yesterday about what was likely to happen.
The espn contract and GOR are likely enforceable because Phillips had apparent authority, and as the agent of the acc, bound his principal to the deal. All the acc schools know this, which is the main reason why the schools didn't include espn as a co-defendant. The slam dunk cause of action is against the acc for violating the bylaws. That doesn't void the deal with ESPN and automatically get them out of the GOR, but it gives them massive leverage against the acc in a lawsuit.
Non-football schools will circle wagons to figure out a way to keep the acc together. See BC, Syracuse etc meeting. Check.
Each school that wants out will have to sue the acc individually because the non football schools like the deal and won't join a lawsuit. Check.
So far it's FSU and Clemson. Both teams know they can get in the SEC, and espn wont sue the conference for breach of contract. Those schools know the acc broke its own rules, they could sue the acc for hundreds of millions in potentially lost revenue, so the acc will settle with them for probably a 300 million buyout.
As it stands, espn has more than enough justification to file a lawsuit against the acc and the the acc teams trying to leave for breach of contract by anticipatory repudiation (allowed under Florida contract law). Basically it's a lawsuit by a non breaching party ahead of a potential breach when the other party has made clear indications it will breach the contract. Clemson and FSU have clearly said they are planning on leaving the acc. Espn hasn't sued because it is fine with a couple of acc teams going to the SEC, as it can still make money from them. If it thought FSU and Clemson were headed the B1G, espn would be suing the sh#t out of the acc right now.
All proceeding as I expected.