In an interview, Rupert says: "I was ready to kill Jon. Literally. Grab that little scrawny ass by the neck [sic] and pop his head off him like a fucking chicken." So...yeah. The guy just told you he lost his shit, and he doesn't seem to be offering any alternative explanations. It's especially satisfying to see his "Troubled Teens Mentor" title superimposed over him while he's giving this speech, because there's certainly nothing that troubled teens need more than a guy who responds to frustration by fantasizing in detail about physical violence. Back at camp, Rupert continues his tirade as Jon continues to try to retreat. "I'm out there kicking my ass [sic] getting you goddamn fish and you fucking turn the tribe against me!" Rupert yells. It's a good point, you know, because Rupert did save all of their lives. If Morgan had come away with a reward challenge and taken "his" spear, the entire Drake tribe would have died. It's totally true. I bet CBS is sure glad they put Rupert on the island, because that would have been a lot of wrongful-death lawsuits to settle!