It comes down to whether you believe a British autopsy expert versus a Jamaican one who is now in disgrace. I know who I'd put my money on. They thought he'd been strangled because of a broken bone in his neck, but this could happen as he fell or as the body was being moved. Secondly, the body was apparently up against the door, so if he had been killed whoever killed him couldn't have left the room. And finally there's a lack of a motive. Anyone who watches cricket knows that the idea of the Pakistani captain doing something in a fit of rage is highly implausible. He's a big guy who's never hurried or stressed, though he did grumble a lot that the universe was conspiring against him.
It's actually quite shocking the spin the media put on it throughout focussing on the movements of the Pakistani team and how their DNA was taken, almost presuming that they were to blame without saying as much.