What you all are failing to consider with the "he only warps in front of me" theory is stick-stiring. He stick stirs only in front of you, when you appear to have a guns solution on him. He doesn't stick stir other times, like when behind you or when you have already obviously missed and he's trying to get away.
With a cruddy connection, the "smoothing code" tries to make up for any lost packets by predicting where he should be given his last position and heading. If the guy is stiring hard, the very next positional packet received may be in a substantially different location than the smoothing code predicted. The result is a warp to the actual position, moving in a different direction than the last "predicted" position. Another microsecond, another slow or missing packet, and you get another apparent warp as again your systems try to catch up. As he stick stirs, each packet has a substantially different heading and angle, so his motion is jerky and warpy.
So, why does he not warp when behind you? Simple . . . he is turning smoothly trying to get you in his gunsights. The smoothing code is better able to predict his angle/heading at each given microsecond as there are no radical changes. His motion appears smooth.
The other thing you need to keep in mind is that it may appear "one way", but it is just an appearance. When I was playing on dial-up I would get people dancing in my screen all the time because my cruddy connection couldn't keep up with the data transfer. It was always worst when there were several planes nearby, all trying to send my comp their positional data. On a couple of occasions I was told to "stop that", as if I had any control on what they were seeing. Since I got DSL the "dancing in front of me" has been a very rare occurrence and the "stop that"s have not happened at all.
But when it does happen, it is usually *gasp* always the same guy! Oh, he must be cheating, right? No, you would expect the same guy with the same cruddy connection who stick stirs the same way to always be the one who dances on your windscreen . . . right?
Seriously, you all need to think logically for a little bit before jumping to the "C" word all the time.
And if you don't believe me, then film it and send it to HTC. If it is a cheat, the guy will be gone. 99.9999999% certain it won't be, though.