I think Sensei needs a break! See if someone can offer to take his classes on for awhile because he obviously cannot teach in this condition. I'm sure he feels he can, but he can't. He's coming to work intoxicated that is not good for his students. Definitely do it soon.
Great suggestion, Heather!
I support this approach completely.
Very practical, considerate, helpful and sustaining to all involved. Good Budo.