Ummm, no he hasn't.
The lad who died was killed by a lack of proper medical evaluation by trainers at the wrestling school he and Khali attended. He'd taken a bad concussion a few hours before at a training camp and was told to carry on without any supervision or protective gear. Whether through neglect on his own part, or as a result of suffering the concussion he took either a back bodydrop or flapjack from Khali and simply didn't open his body out in time, landing on his head again.
As shit a wrestler as Khali is, there was nothing he could have done about it, the move wasn't botched on his part. The training school were found entirely at fault.