Allowing oneself to suffer injury in a confrontation they helped orchestrate is an easy way to misdirect suspicion. Most people react with sympathy and feelings first, logic second. Save for serious injury, that should not rule out anyone.

But I do agree that Cargg, Daxam and Naltor are the ones we should investigate. Use a rule of three: one incident is coincidence, two incidents are poor decisions, three incidents are something more.