Reading this transcript, it sounds like the dude died from drug induced excited delirium. Everything in that transcript lines up with this
"The presentation of excited delirium occurs with a sudden onset, with symptoms of bizarre and/or aggressive behavior, shouting, paranoia, panic, violence toward others, unexpected physical strength and hyperthermia"
"In approximately 10 percent of cases, according to the literature, the person with excited delirium may die suddenly. The heart or breathing simply stops. So when someone dies in that agitated state and no other cause of death is found, the medical finding is that excited delirium was the cause."