It looks the the Jets were running the return to that sideline and had two players sealing the Dolphin outside man out of bounds.
The coach needed to get out of the way rather than leave his leg out there.
That's a pretty common soccer foul by a player who gets beat on the dribble. Once he's on the wrong foot he leaves his leg out there for the offensive player to run into. It's more a foul by omission than by commission.
when the head coach fosters that type of attitude in the players, it will lead to things like this.
The bloom is coming off the media’s Rexie rose.