According to football outsiders DVOA Miami is:
4th at running the ball
9th at stopping the run
14th at stopping the pass
25th at passing the ball
Many theorize that Ross forced Philbin to change offensive coordinators (I don't agree and believe it was a mutual decision, but thats neither here nor there). Many also seem to believe that it takes 6-8 games for a QB to adjust to a new system, which is public knowledge that Ross and everybody else understands (again, I don't agree with this theory but its probably debatable).
So if Ross forced Philbin to hire a new offensive coordinator knowing that could cause Tannehill to regress, and our passing game is the only area we've regressed in, then how would it make any logical sense to fire Philbin at this point? The logic doesn't add up.