Fox is not on the hot seat for 1 single reason more then most.
This team knows Manning only has 2, maybe 3 years. They're not going to fire Fox and bring in a new HC to start over when you have a HOF QB in his last few years. That's too much change. I high doubt McCoy is gone either. At this point people, it comes down to players. Against the best teams in the league this offense has pretty much, minus some turnovers which are not on the coaches, have played well enough to win every single game.
We don't have enough good defensive players and that IS the bottom line. I'm not even saying we need a few more elite defensive players, I'm saying all we need is a few more lagit NFL caliber starters on defense, particularly the LB's.