No regrets, Seeking. Felt good, didn't it? I did it myself a few times. The only problem, and the one everyone here was hoping to save you from, is that you probably won't feel so good about it after a few days time. Not that anything you said was wrong, just that you are SANE, and it is not your nature to hurt, regardless. He, on the other hand, will just look at it as a spew from his crazy W. Use it to pat himself on the back and prove to himself how right he was.
This is not a 2 x 4, Seeking, just experience talking. I believe I have been a bit quicker on the anger draw than you ever have with your spouse. I always did much better in the DARK
Now, about your D. I'm so very sorry she became caught up in that, but it was perhaps inevitable. Of our three D's only one still has contact with him, and that is minimal. She has seen the OW only because they came into the restaurant where she waitresses, ask for her table, and she had to wait on them. Said it was hard not to drop a platter of hot food on her.
Okay. You got that out of your system, and he certainly had it coming. Take a deep breath, and move on from this point.
And you are right, Seeking, you are not in the same class as most of us - You are a class above. ((HUGS))