I feel that if Muschamp loses his job (I know it's all but a foregone conclusion, but it hasn't happened yet), he will continue coaching in a DC role somewhere in the SEC, ACC, or Big 12. I don't think he would get back with CNS unless CKS leaves for an open coaching position elsewhere.
Mullen/Freeze - Between the two, Mullen is more likely to leave, but I still feel like both coaches will stay put. I do remember some stories floating around that Mullen wasn't all that appreciated by the UF fan base for his work, but I don't know the veracity of those stories. If Mullen leaves, it'll be for an SEC East team.
Malzhan - I feel like he'll stay at Auburn unless he is offered money that he wasn't expecting to be offered. While others believe that the administrative culture would eventually force him out, he knew about that culture while working as an OC at Auburn, and then chose to come back instead of staying at Arkansas State. Let's be honest, he's only lost three games since becoming HC at Auburn, and seems to be doing well. The Alabama-Auburn rivalry may take on a NC-affecting tone much like the Florida State-Florida rivalry during the 1990s.