Even people undergoing surgery don't crap themselves. In order for that to happen you have to be in really bad shape. And since the paramedics found him unresponsive (which I take to mean not even any eye reflex) and without a pulse, it's a pretty reasonable marker as to when he died.
Why are you so anxious to cover for armed government agents who calmly, slowly killed an unarmed, prone civilian in handcuffs in front of witnesses, in public and on video, in broad daylight?
no cop pulled his gun....no cop used a taser....he was not profiled...nobody got a single punch...or a single kick. They were answering a call to service while on duty, a civilian reporting a crime. Suspect was under the influence, cop used an allowed restraint with ONE knee..and you think they will be convicted of a murder??...really? Unless the autopsy shows crushing neck injuries and asphyxiation, never gonna happen. Any charges will be laughed out of court.