It could end badly for LSU, of course, but I only see one real scenario for that. But even under that scenario because than LSU knows who truly wants to coach at LSU. Whether Coach O is a good coach or not is not known, whether Coach O is 100% all in is known by everyone.
Even the worse case scenario is possibly good for LSU, greatly reduced coaching staff salary. Aranda had done a good job, but if he wants to leave.... leave.
If you watched the game you would know why LSU only 10 pts against Florida, as far as TAM.... they play flag football. Not sure there is really anything to explain.