I have no doubt that Flo wouldn't hesitate to make a change. I just think you are making a big assumption, that he is unhappy.
Look at the injuries on offense, and our skills weren't exactly dynamic to begin with. At times, we are playing 5 or 6 rookies, including one at the most important position. I'm not sure what you expect Chan to do with that. If you don't like the play calling at times, that's one thing. Under the circumstances though, has Gailey really been horrible overall, as it pertains to game plans, and adjustments?