"it's not your job to catch him drinking, it's his job to prove to you that he can be trusted to stay sober"
I have to say that I agree with this statement, people who are in AA come in all the time with forms from diferant sources to be signed by usually the person leading meeting saying that they were at the meeting. If infact he is on the road to recovery he can document it with constant AA meetings. I don't think I would make it so easy for him and definitely not take his word. He needs to earn it.