They're really losing it
After DH ignored FILs last text, he received this from his uncle a few days later:
DH, to think that you will not have nothing or anything to do with SD is totally disgusting. I drove many miles from the Twin cities to spend time with (uncles daughter). Pretty sure the wife has you by the balls! Very sad also to know that your kids will not have the chance to spend time with her. She is welcome at our home down her at the lake anytime. Remember that what comes around goes around. You are a piece of work and if I see you in person again I will tell you so in public. It will be my pleasure to do so. So see you never again will be your best bet!
DH said this is the first time his uncle has ever contacted him by phone in his life.