You are getting way too worked up about this stuff. Not making a treasured family recipe because he fed the LEFTOVERS to a dog? I mean, it's the leftovers. It's not like your kids didn't get any because he fed it to Fido.
I get crazy in-laws, I do. Trust me. But don't let him take away your special family traditions. If it bothers you, get up and put the effing spinach pie leftovers in the fridge before he can feed them to the dog. Wrap them in foil and label it "liver." Problem solved. DON'T LET THE TERRORISTS WIN.
