Wouldn't be necessary. He would probably just give Enos the play-calling responsibilities.Good for him if it happens after the season. He'd be going home...his family has been through a lot over the last few years.
I'm not worried either way because Saban would be shouting "MAKE A LINE" outside his office for coordinators wanting to coach this passing game for a year or two.
While Locks is the easy option, I'm not sure they would go after him. They didn't offer him the job after making him interim after Edsall was fired in 2015.