my reading of the situation is this, Cav is not the first sprinter to move about in a sprint finish and wont be the last. If you look at Cav's fist move in coming off his teams mates back wheel he went way wide and that to me was the most dangerous move he made yesterday, but looking at it again it looked like a rider came at him (haussler) and caused that move........it is only millimetres in every sprint into a city centre finish that differentiates between a crash and no crash...
it looks to me that Huassler's front wheel touched Cav's, Haus's last movement in his sprint is exaggerated and it is this move that touch's the front wheels of both bikes and brings them both down and the subsequent dominos.....but Cav has a big mouth and has become a target and an easy target...