Billed out at $100 a can that should help offset the cost of the remodel then. Just let your contractor know that he will be getting a bill for the beer and you will expect a check at the end of the build. (You will of course send this to him after they have completed the remodel). Take pictures of the empty beer cans, etc. for evidence and turn it over to your lawyer. When the contractor gets your bill for the beer and his legal fees he is going to be having a lot of fun with his crew. (God I hate thieves and that is exactly what they were and still are).