If they're stuck, they're stuck because of the financial constraints the ACC has put in place, not because they wouldn't be absorbed if they were free.
I know as much as you do, which is nothing. However, if FSU is to be believed (along with many posters on here) the GOR is no obstacle at all.
It's not a complicated formula. Clemson and FSU need two non-negotiable things to leave the ACC:
1. A financially feasible means of getting out of the ACC.
2. A place to go.
They only need those 2 things, but they must have both. If they had those 2 things, there would be an announcement. That nothing has happened tells us at least one of those is missing. In reality, both are probably missing.
For all the bluster, FSU has not presented any possible means for leaving the ACC. If they had a real way out, they'd just say it.
But, if you want to believe them that the GOR is not an obstacle, then it only leaves the possibility that they have nowhere to go. They aren't going to declare they are leaving the ACC without having a plan to join another conference. Which tells you no other conference has invited them or agreed to take them in once they leave the ACC.
In one of the many articles that have been written on this, the Big 10 was deterred due to the GOR. No point wasting time right pursuing someone who cannot be made available.