. >> i pushed everything to the limit, because, caz you can tell, i think i'm unstoppable.me. nothing will ever kill me. i thought i was god. reality check. i'm not. >> in spite of his calm demeanor, a few hours after this interview, etter got into a verbal confrontation with a female correctional officer that quickly escalated. cert, the correctional emergency response team, was called in to extract him from his cell. >> he's banging his head on the door, spitting at the glass. refusing to comply with orders. permission to extract him from his cell. >> for security reasons the prison videotapes all extractions. >> you ready to move? keep your hands down. all the way. >> open b-11. >> a mask is placed over his head to prevent him from spitting. >> let's go. initially, he seems to be compliant. but as they pass through the doorway, etter explodes. >> oh, hey, hey, hey. >> [ bleep ] [ bleep ] [ bleep ] i swear, don't break my neck. [ bleep ] yeah! yeah! >> etter, stop, stop. >> yeah! [ bleep ] hurt me more. >> stop banging your head. you understand? >> i'll kill you all [ ble