In the interviews the commissioner has clarified that his role is as a broker, negotiator and adviser when it comes to adding schools. He is in the upper chain of command, but he reports to the conference members and ESPN. So it seems he is not the Commander in Chief or a member of the cabinet, but something more like the 5 star general or head of the Joint Chiefs of Staff, or a theater commander like Eisenhower was in WW2. The point being: He takes his orders from higher authorities, and represents the AAC in its dealings with ESPN, as Ike did with Churchill.
It's doubtful that Tulane and Tulsa would be jettisoned, at least until the 10 year media contract expires. Those two schools could sue for breach of contract and financial damages to their future bottom lines, and it would piss a lot of people off.
More importantly, even if 9 AAC members were to bail on the current arrangement and pay their $90 million to those two schools, they wouldn't be operating independently, because ESPN has invested a billion dollars in the conference, and they might not agree to losing two sizable media markets in NOLA and Oklahoma (biggest cities Tulsa and OK City only 2-3 hours apart).
Denver, Salt Lake City, and San Diego have similar market sizes, which would help, but Denver's market would be split in half by AFA and CO State. Boise doesn't, and it's not clear if ESPN would be willing to pay $7+ million/year to add those 4 schools. More likely, San Diego, BYU and AF or CO State would be worth it to them, and adding 3 of those while retaining T & T would give the AAC a 14 school conference. ESPN might go for that, or might find it more in their interest to add only 1 of those schools.
So the 9, 10, or 11 AAC schools wouldn't be flying the plane alone. They would be co-pilots in such a deal, and couldn't make it happen without ESPN's consent and direct involvement. ESPN would have veto power and negotiating power, and they've got all the cash. So, in the final analysis, it will be mostly up to them, in consultation with the various universities.