There was no specific threat made against anyone. It even sounds like the actual opponent wasn't named at the time PAR35 or Phantom Lord made that comment. And "kill your opponent" can be taken literally or figuratively (i.e. pile on all the negative stuff you have and bury him). No one ever suggested putting a bullet through a particular person's head to get rid of him.
That doesn't sound like a comment that I would have made - I'm going to dig out the original thread and see the context.
At this point, I'm beginning to wonder if the transcript was tampered with. I might need to call the DA next week to find out if I have been libeled in this story, either by the police chief or the reporters.