Well, the walls are torn out, mostly, and the interior walls are in fine shape.
I just decided to go ahead and remove all the drywall in the room. That will be easier that trying to tear off the three layers of junk on them now.
I take it that green drywall is acceptable for the entire room? I'm thinking of using it except around the tub where I plan to tile the walls. 6 mil poly on the studs, cement backerboard then tile if I recall right.