Wow...I am truly grateful for each and every reply. I must say I did post this message in the hope of receiving any kind of validation, and what I feel now after reading all of your replies is....Proud.
I know what I did was right, and I had absolutely no hesitation to tell him he could not take our son, once I realized he was drunk. I'll say it again...I am so Proud of Me! I have no guilt feelings for "over-reacting". I know that it was not me that caused the "scene".
My son is amazingly intelligent, and he gets the fact that his dad has no control over his behavior when he has been drinking. And he knows that his dad is a good man.
I have released an enormous burden from my shoulders, in the sense that I choose not to lie for STBXAH any longer.
I'm saddened that my son has had to learn about this at such a young age, and at the same time feeling very blessed .
Thanks again for your support and honesty.
Shivaya