There are other ways to look at this in which everybody is acting perfectly reasonably and nobody has to be the villain.
Assume for the sake of argument that CBJ wanted CJG to work 80 hours/week, and that he had good reasons for this requirement. Assume also that CJG was used to working more like 50 hours/week at South Carolina. Assume that a football program achieves certain efficiencies when it has been properly functioning and competitive for an extended period (e.g., recruiting might require less effort when you have a recent successful track record), and that these efficiencies account for the difference in performance expectations and workload between South Carolina and Tennessee. In this scenario, both Spurrier and Jones could be said to be making the correct demands of their staff based on the different stages of the respective programs' development even though one job requires more hours per week. Now, assume that Florida State is in more of a South Carolina position than a Tennessee position when it comes to rebuilding. If so, an offer of the same salary by Tennessee would still translate to significantly less pay on an hourly basis, and CJG might have perfectly reasonably things he would rather do with the other 30 hours a week of free time he'll have at FSU.
So, you know... there are a lot of assumptions here, but they seem reasonable enough to me. It's entirely possible that the matching salary Tennessee offered was not really an equivalent offer, that both CJG and CBJ are perfectly qualified football coaches, and that CJG is just taking advantage of an opportunity to work less for the same pay. None of this makes any of them better or worse. Tennessee may well be better off in the long run. Who knows?
Good luck to CJG.