I agree with Amy. Quacking (as far as my understanding goes) is more along the lines of talking nonsense, harmless but still its nonsense about their drinking. Like saying that everyone is really an alcoholic when you think about it or that having a few drinks a day is actually good for your health. Anything to try to minimize what they're doing or to try to normalize their behavior is quacking. Blaming you for his problems is more like projecting, calling you cold, and verbally and emotionally abusing you, saying you fabricated the violence.
Sorry you're dealing with this. Hugs.