Take your kids to Thanksgiving with the family. Your H is a grown man and he made a decision. If he wants to throw his own pity party, that's his choice.
Make it a fun one with your kids. They deserve to enjoy the holiday with upbeat and happy people. They don't need to sit around the house and see your H acting sad.
I also have a feeling that if you stayed with him, he's going to start getting nitpicky and when you start getting upset, he'll say "see I told you to go". That's the way they are.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.