I dunno.
The most important people in this equation imo is always the kids.
Do what's best for them, even if it means swallowing your pride, or letting him look good for a day.
If you keep them away, they may resent you in the end.
If you question whether or not their SAFETY is in question, than simply tell him to piss off and fight it to the end of the world.
If you're not worried about that, then "I" think it's probably best for the kids to see him....if they WANT to see him. That's another story.
Father's day is only once a year and it's not single guy day, it's father's day because of the kids.
