I was fighting Diablo's second phase in multiplayer normal mode. He put me in one of the bone cages in phase two and then died. When phase three started, I was out of the bone cage but still stunned, permanently. I remained stunned while my partner brought Diablo below half health, probably for at least a minute so I knew it wasn't going to time out. Eventually, Diablo killed me and when I was rezzed I was fine.