so you guys are for a mentally ill person running shit. Alcoholism isn't a thing, it's a symptom of a thing called depression or ahedonia or a fucked up reward system. People are rarely brought to alcohol without a reason to use, it might be that it feels better, again, a symptom of some fucked up underlying reward system impairment and excess glutatmate. I understand there is a DSM-V inclusion but what I mean is that whether it's alcohol or speed addiction has a underpinning theme, people just choose the drug. Alcohol and valium are different drugs but attract the same type, the treatment is the same etc.. cocaine or meth same principle, same treatment same issues. These aren't seperate things, alcoholism, cocainism but a mentally ill person usually derived from an organic souce otherwise it's usually nuture related and then it's not drugs but therapy.
He is an addict, alcohol is his drug of choice, but every so often it doesn't cut it, he wants more re-inforcement, got to get that dopaminergic surge to go with the inebriation once and a while.. in comes the coke. Sure he wasn't drunk when he makes decisions, but I can bet he was hungover and not functioning well ie sick.
When you are an addict even functional, you will cut corners, change plans etc to get to your med faster, it becomes the only thing you care about and look forward to, everything else is just a means to an end, the drug.