You're going to do more damage to yourself if you continue down this path. Your words spoken in anger will only fuel his self-hatred and likely give him an excuse to go deeper into the bottle. Alcoholics hate themselves enough, they really don't need our help in the feeling like a pile of dog **** department.
Families aren't entwined no matter what. That's a lie most codependent families tell to make you believe you have no options. And your family is plenty codependent. You have the choice to cut him out of your life completely, which, judging by the looks of things, probably wouldn't be a bad idea. You aren't obligated to maintain a relationship with anyone who doesn't bring positivity and good health to your life. I haven't talked to my mother since July 2012. I don't see myself talking to her ever again. Totally cool with that. But that's where Al-Anon becomes an invaluable resource.