I don't think that he should go back to the olympics but I think if he doesnt then we got a less chance of getting a medal,

How I see it he is a very bad sports man he is the one who chose to do drugs and he must new to some level of degree that he would of got caught because they get drug tested after nearly every race.

Personally, how I see it if you want a medal at the olympics let him run if not give somebody else a try!