It's not the same because the legal obligations of a board, or further up, the head of the ACC and the schools they represent that form the body of the ACC, are bound by statute (in the state of NC BTW) and the organization's governance documents. Not the whims of a single person or even a single member. That's why fiduciary duty is usually pretty obvious in governance and dissent plays a critical roll in the process. That duty ultimately falls back on directors, or in this case, the schools, because the appointed representative answers to them. Not the other way around.
The commissioner of the ACC has some "emergency" type powers but generally, nothing is formally approved without the "committee of the whole" approving it. Even after the fact, there has to be formal consent on something the commissioner does. "We don't like it, now," isn't a breach of fiduciary duty on the behalf of the conference or the commissioner and that is especially true if there isn't some sort of formal dissent. If there is something illegal, fine, but that doesn't seem to be the case or that would be the tree to bark up. "Not a great deal," really doesn't mean anything.