Not that I am blessed with an overabundance of wisdom, especially when put in a stressful situation (being fired and replaced). But I will say that if he were a little smarter, for his own marketability he would keep quiet and not complain at all. At the end of the season, if we had an epic fail of a season, then he would be fully legitimized as a capable head coach and not a sour individual. At least even now, although he isn't looking like a good HC, he wouldn't have looked like a bitter individual.
Who wants to hire someone that isn't maintaining a semi-professional level of respect for what was your school. I'm sure he will find a job, you don't get to D1 with a winning record without something (or Ms. Ford on your team!), but this will add one more mark on his reputation. I'm sure he regrets opening his mouth.