He or she needs to understand that asking guests to leave one's house is only appropriate under extreme circumstances like abuse. This was nowhere near an abusive situation.
I'm really sorry for you, OP. You are between a rock and a hard place since your family has a legitimate right to be offended and can take it out on you, and your spouse is obviously not right in the head (at least on this occasion) and will surely take it out on you as well. Hopefully this does not happen very often
Is there any way you can persuade your spouse to take anger management classes, see a therapist, or something??? You really must NOT let this go. Stay calm, but continue to insist that your spouse seek help. You can also threaten divorce (I had to do this many years ago when my husband was being abusive - he turned around).
Good luck!