Not necessarily, there was talk before (ACC raid on the BigEast/ SEC on the Big12) years ago about the contracts changing and needing to be rewritten if/when new members were added and also negating the GOR in the old contract then resigning a new one opening up an opportunity for schools to leave and that was around the time the ACC signed their GOR but that was a long time ago and I would assume the ACC (as well as others) have taken out that language but we don’t know all of those details and what lawyers may be froggy enough to try his/her luck with these new changes. They may argue the travel ect was never a part of the original deal. It’s a guess in my part but at the same time the conference could also be positioning itself for the 3 no votes to leave so when that day comes they have backfilled already with the best they can get. Strength in numbers.
If the ACC knows that there will be schools leaving when they can anyway then the move MIGHT be similar to what the Big12 did, take a big money buyout and still have enough schools to have a conference at all.