Puppy, Thank you. I honestly didn't think I had it in me. But finally, I was able to stand my ground. Of course after he left he texted OW, and then she called him back and they talked for 68 min.
OUT OF YOUR CONTROL. That part that WAS within your control -- you controlled, and did a damned fine job of it, too!
You will need to repeat this with him several more times, but after he sees that he CANNOT bait you into an R convo anymore, without it just being bounced back on him similarly to how you did it above, he will eventually stop trying to bait you.
Oh, and chances are quite a bit of that 68 minutes was with your husband in a rather agitated state, and NOT very pleasant for them.