You need legal advice on this one. Get a lawyer so you can protect your business and protect yourself financially. You might not be able to get him out without this kind of help. I don't know about this first hand but have a friend that put off getting legal help and lost out big time. Good luck and don't feel bad about protecting yourself. He is drinking and unemployed because of his choices and if he's already done rehab it's not like he isn't aware of that.