In case you don't follow thru with Al-Anon, keep in mind the various roles that alcoholics put their spouses, family and friends in... Don't allow yourself to fall into becoming his enabler or presceutor... Those are the two biggies to try to avoid...
He allready knows he has a problem... For you to belittle him will produce nothing except another reason (in his mind) to continue his alcoholism... You can, however, confront him with the various things he has done while under the influence without being a prosecutor... Just stick with the facts... Not the judgements...
Enabler is just as damaging... Most practicing alcoholics have enablers in their life... The wife that makes the call to the boss or buys him his booze...
You may allready know about these roles and maybe doing the right things not to play into his hand... I donno... Just thought it was worth bringing up, anyway...