Letting Montgomery go was a no-brainer, and I think most would really question Free if he didn't pull the plug. It will be interesting to see if CHF takes over the offense, or gives the new OC the reigns.
Roberts, I have no clue. I thought he did a decent job with less than stellar overall talent. DB's were really good, but not much else. Defensively, Auburn was squarely in the middle of the pack, at 7th, allowing 22.6 points a game. I'd have to go with, as some have suggested, there were some serious personality conflicts going on. I think the fact that Florida snapped him up (See what I did there?) points to the issue not being one of teh corchings.