And in the meantime has probably cost himself any other head coaching job in the future.
He agreed in principle to coach the Colts 3 weeks ago.
He hired a full staff of assistant coaches. And now this happens. A staff that will now have to work for a coach whom didn't hire them, or worse yet, have their contracts cancelled and be out of a job.
Now, if he does end up being the Patriots head coach eventually, he will be directly replacing the greatest coach of all time, and would have to replace the greatest QB of all time. A no-win situation for him.