Oh, not for competing in the regular olympics... But for falsely accusing a fellow athlete who happened to defeat him in the 200 meters of cheating.
The limbs used by Alan Fonteles Cardoso Oliveira were completely legal and within the required length according to the officials of the race. A slow down of the tape by another website that I can't remember shows Oliveira just had a much quicker stride then Pistorius.
I believe Oscar Pistorius should be expelled from any other events for making such an accusation and throwing the event into turmoil. Pistorius just lost all my respect.