I wouldn't bring sunday up at all, let him call the shots. And be perfectly ok with whatever he decides, just have back-up plans in case sunday he says.."well, gotta go.."
You have to remember Cindy, the right thing for him to do would be to watch the Super Bowl together as a family IF he was really, really trying to send you a message. My guess is, he will choose to go to the parties by himself, I could be wrong, but thats where I'd put my money. So, it falls back on you in terms of how that sets with you. The winning Cindy accepts it for what it is now, and in the name of the R, you just bite the bullet on your plans until he makes HIS decision. Then you happily agree with whatever he decides, and file it away in the memory banks if its not to your liking. Again, this is an opportunity for you to see WHAT YOURE TRYING TO SAVE..Just let him call the shots and perhaps he'll surprise you, and you'll be better off for not trying to push for an answer.
Think of the big picture, not just sunday, becuase three weeks from now, what happens sunday is in the rear view mirror anyway.