Sunrise,
I've thought about this very situation several times as I consider what to do in my marriage. I am close with several of his family members and often wonder how a separation will affect not just my relationship but my kids relationship with these family members.
I've also thought about my kids hearing all of the gossip and venomous talk that would likely surface during family gatherings. I don't think it would be started by the family members I'm close with but I know my husband wouldn't hold back.

Take care this holiday.