You are correct. However, it has been pointed out, ad nauseum, that several schools within and without the ACC have reviewed the GOR, as have many private law firms. GORs are not new documents, having been used in the entertainment industry long before conference TV deals. They have been upheld time and again. Further, UT, OU, USC, and UCLA all attempted to break the GOR and assessed it to not be worth the trouble, within the last few years. UVA, UNC, Clemson, VATech, UMiami, and NCState have likewise concluded the same. The SEC and the B1G refused to get involved with any discussion of early release as they were avoiding any appearance of interference with an existing contract.
Finally, FSU is a competent institution, agreed to the ACC withdrawal agreement and the GOR. Their lawyers agreed to it and the school signed off on the deals. FSU pushed for the large withdrawal fee. FSU pushed for the GOR. It remains unlikely that a court will uphold FSU's arguments and throw away the agreements.
Besides, if the GOR falls apart, then all GORs fall apart. If FSU is able to negotiate a less expensive buyout, then GORs are no longer worth the paper they are written on. Far more is at stake than the ACC's GOR.
Remember, courts generally review contracts as valid documents and will only void them for certain reasons. FSU has failed to legitimately argue a reason that a decent court will uphold FSU's filing was very one-sided and conveniently left out many pertinent facts which a court is likely to find that disprove FSU's arguments.
Anyway, much has been written on this issue in this thread by several attorneys. You may wish to read through their opinions.