Tell your husband to do it. They're his parents. Lol.
Haha. He's got the right idea. Lol.
Is this gonna be like not hosting Xmas dinner EVER? That's harder to say. If it's only one time, you can find a plausible excuse.
Just tell them, If they moan they have some serious growing up to do.
Just say it. When I told my parents I wasn't coming for Thanksgiving last year they were super offended, but they got over it eventually. Just invite them over some other time for a nice sit down dinner.