Doesn't surprise me. They been running with the line that Metcalfe "bullied" him. Looks like it was the stabber that was actually the bully. He deliberately walked into a tent he knew he didn't belong, because he was looking for trouble.
Metcalfe did NOTHING at all, that can be considered to be "bullying". The MURDERER was in HIS SEAT! He asked him to get out of it, and then the wannabe gangbanger went ballistic.