Long story short.. This highly loved by yuri, DFW, now DTW FO is commuting on SWA from point A to B with a stop in the middle. During the stop there's a mx issue. All pax are told to deplane for a tail swap. Spirit FO stays on the plane and won't deplane until he's given the exact reason for the swap and what is wrong with the plane. He then starts giving the SWA fas crap and finally the CA has to come to the back of the plane to tell him to get off. SWA JS coordinator wanted to end their agreement with Spirit. Thankfully, our guys smoothed it over and that didn't happen.