WOW. That is Reto Hug and Sven Riederer. These guys race against each other quite a bit here in Switzerland and I get the impression they don't like each other much. On Reto's webpage
www.retohug.ch he was moaning a few months ago how Sven won a sprint because he drafted (in the run as it was a little windy) off people he was lapping to conserve energy and thus could out sprint him (he arguement was that the race conditions weren't 100% fair for each competitor). He's also said something along the lines of "this is what some people consider sportsmanship" to the recent sprint finish as apparently Sven tried to block him.
Here is a video of it btw:
click here (I haven't watched it yet).
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Searching for the bliss of ultimate exertion.