Who takes over? Who is this magical coach on the staff that fixes things? Or are you talking about someone outside the organization?
I mean all the offense staff is complicit in my mind. So not sure how switching one idiot for another really helps?
Mike Pettine has been a HC before and is on staff - he gets orders to toss the playbook and focus on protecting fields. Every coach in the building gets told they can simplify things and not use nagy's concepts any more. You end up keeping the terminology but reduce the playbook and sub packages by 2/3. Let the players play fast and think less.
And then ride it out, and if you are Pace, pray that making this decision, even if it pisses off George McCaskey in the moment, pays off dividends for you, if not with the Bears than with another NFL team who, if the Bears immediately improve post move, would think the issue wasn't with Pace, but with a terrible ownership group.