CJR.....The thing about all this that stands out to me is that they had the nerve to act like this in YOUR home at YOUR party. I mean heavens, what were they thinking??? Was it done intentionally to tick you off? to show you up? to make you feel uncomfortable? Whatever the reason...your gut feeling is screaming loud and clear that there is a problem in your marriage.
I'm so very sorry you are going through this. How painful it must have been to see your husband acting like this. I truly hope you can pull yourself together and confront him with your feelings and expectations of your marriage. Be prepared for anything.....acceptance of his behavior by him or complete anger and denial that he was doing anything wrong. Also be prepared that you will be going through a huge range of emotions.
I wish you well CJR
sabby