This may well have been discussed before and if it has i apologise.
One thing that doesn't make sense to me is in Oscar's affidavit he says and i quote
"I went back into the bedroom and grabbed my cricket bat to bash open the toilet door. A panel or panels broke off and I found the key on the floor and unlocked and opened the door".
Now from looking at the size of the gap in the door here
(graphic)
http://www.tmz.com/2013/05/31/oscar-pistorius-murder-scene-bloody-photos-surface/
Clearly all you would be able to fit through that gap would be an arm, i think it's very conservative to estimate the shortest distance between the floor and the bottom of the gap is 100 centimeters, it would be impossible to pick up a key through that hole in the door from that height with one arm.
So how on earth did he manage to pick up the key?.