You do not think it is enough that he makes a decision and sticks to it?
I used to bartend when in college..we used to get a lot of recovered alcoholics that would just come in for soda or water. Didn't touch alcohol again. I know this goes against the tried and true philosophy of removing the addict from the stimulus.
It CAN work, but not when it's still so new. I doubt those recovering alcoholics were hitting the bars within days and weeks of seeking help, and agreeing to end their relationship with alcohol.
I would only recommend MC if it's to get their help in brokering a no-contact/transparency agreement, and I would only do THAT if I knew UP FRONT that the MC was going to help me make that stance.