That totally sucks. He should have respected your wishes on your day. Still, remember that it is an addiction and a HARD one to battle. Having his weakness staring him in the face the whole time is a demon of the likes I hope you never have to face. It was because some in the grooms family would have done the same that there was no alcohol at my daughter's wedding this month. Those same people complained loudly when invited, but respected the couples wishes. Just keep in mind that future functions with dear old Dad should remove the temptation in advance. Talk calmly with him. At least give him a chance to apologize. if he refuses, cut ties and move on with your life with your spouse.

On the plus side, he ended up this way on the toilet, and not on the dance floor or the buffet line. Coulda been worse.