He was fading away and Jones just kept moving into him until he was under him (if you move into someone's leg, then yeah, you're going to get hit by their leg), it was a natural motion, not a kick. Look at videos of fade aways, and you'll noticed that same leg motion, it's called momentum. It was dirty, and I'm not quick to call things dirty, but it's obvious, obvious to even most Kobe haters.