Your kids are older, right? If so, I guess they should be the ones to choose who they spend their time with.
Yet labug brings up a good point. If you don't have one, perhaps it is a good time to get a custody / visitation agreement in place with your H. That way at least you and him won't have any issues about this. Right now the kids are angry at your H, but their feelings might change and you don't want to put them in a situation where they feel they have to choose between their parents. They might actually prefer not to be always on the spot in making these decisions of where and when they go and would be willing to go with a fair agreement that doesn't put pressure on them.
Specially with the upcoming holidays. You guys have had various traditions in place for years. I am sure that if your kids didn't have a preference, you would still love to host your Xmas lunch and your in-laws might still be hoping to see your H and kids for Xmas dinner. Then you have Thanksgiving, New Years Eve, etc.
I don't know. I know your H is not very agreeable now, but you can always be the one to take the initiative and try to open a dialogue with him for better co-parenting and a solid visitation / custody agreement is the first step for that. Then if he decides to not work with you, that is his problem and you'll know at least you tried.
IDK, it may be unrealistic at this point, given how emotional and volatile things are, but I thought it's at least worth bringing it up.
((((NLW))))
Me & H: 44 D7, D6, S3 Together: 20y, M: 17y EA: 11/13/10, Sep: 12/23/10 EA becomes PA: Spring 2011 H filed for D: 09/06/12 D Negotiating began 2/15 OW seemingly gone on 3/15 Still negotiating D