If Wade wasn't the DC, I could see it happening.. but still not likely.
How many NFL head coaches have EVER been fired mid-season? The dude from the Lions went a full 0-16 two years ago. That kind of thing would never happen in baseball or basketball. Its not a common practice and for good reason. Football teams are nothing without continuity from beginning to end. Even if you suck you'll probably be worse after a coaching change.