I have been on the business end of this type of shunning (it was a summer job for college money). It can be tough eating alone - even for a summer. They ended up shutting down the entire line by sending everything to me totally screwed up. Management said I could hold out (this was a right to work state) - but I knew they wanted this resolved fast. The next step was going to be tires and windshields.
Tough bunch to work with.
Went to work in a machine shop in Milwaukee. Had to join Machinists an Aerospace. Okay. But I produced too many parts on my first day. Union stew said I could only make 800, and I had made 1,100. Next day I made 1,300, and they were waiting for me in the parking lot.