PEDs in the NBA?

I've always said that NBA players will never use steroids, because it screws up one's mechanics. But Orlando Magic forward Rashard Lewis has tested positive for a banned substance, which he said he accidentally got over the counter. As a result, Lewis will be suspended for the first ten games of the 09-10 season. While steroids in the NBA is possible, I would be shocked if Lewis purposely took steroids. Lewis is a lights out shooter, as he showed throughout the playoffs, and steroids would throw off his shot. It would be much more likely for a big man like Dwight Howard or Shaq to take steroids, as they spend most of their time down low. I am in NO way accusing anybody of 'roiding, nor do I think they are.