They shoulkd never have tried it even without him. Rmabis really failed there. And as much as anything he failed by just slavishly carrying the triangle on his back as if its the only system he knew. Looked very minor league. Like an assistant coach caretaker for the system rather than a qualified head coach able to adapt and lead.
Of course Kahn got to fail too by not firing him until the day before the draft, and now talking about adding a college coach and just...idiot.