Ouch. I feel for ya dude. You might want to put a muzzle on the puppy while he's indoors, at least until he learns (if that's possible ) not to chew on everything he sees.
I had to do the same to 3 german shepherd puppies we had at home when I was in high school. As they grew, I slowly switched to using the muzzle only when they misbehaved (ie. chewed into something they were not supposed to, like model kits , teddy bears or each other ). They eventually got the point that if they wanted to be inside with nothing on their faces, they had to behave.