Two possible scenarios.
The first is that he had a solo crash possibly from a flat, a pedal strike or simple loss of traction or balance, fell and was struck while down.
The other is that he was struck first then fell.
There's a big difference between the two, and it's not clear which from the reports. If he was struck before falling, then it's a question as to why and how.
For example, a broken pedal or simply his foot slipping off could have caused a sudden lane change (my record is the full width of the road, when a pedal broke during a sprint), or a very low tire making handling sloppy.
Of course, he could be one of the thousands struck from behind while riding a perfectly straight line.
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FB
Chain-L site
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Just because I'm tired of arguing, doesn't mean you're right.
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Last edited by FBinNY; 10-07-14 at 01:27 PM.