From the very little I know about recovery, I would say that no matter what the outcome of his drinking (i.e stops or continues) there must be a consequence for his actions.
Whatever they may be , big or small. Without a consequence, there will be no reason on earth for him to stop. And the one thing I was taught in treatment was that there are consequences for my actions and I would imagine that this is a universal message.
Sorry if I come across as cold-hearted, because the exact opposite is true