I'd bet you're going to find other areas that are those mycelium farms, too. You may end up removing either the outer skin or the inner wall panels to get at every spot. Like Bob says, repairing the frame isn't the bad part, moving all the builtins is what takes time. If you're going to use them again, then they have to be stored out of the weather.
FWIW, prior to purchase of my Starcraft, I knew I was going to gut the trailer so finding one that was older and may have leaked was my objective (I knew I wouldn't have the heart to destruct a good looking unit). Being able to put my arm outside through the kitchen wall was just a bonus!
