I just watched the video again and I gotta say that indo was totally done on purpose. In fact I think I can see his hand/arm make the motion to brake.
The debris from the UAV were all on the ground at the time he indoed. If debris was going to cause an accident like this, it would have happened right after the impact, not 5 revolutions at 40 mph later.
What's an "indo"?
And what, exactly, would you say is stuck in his front wheel as he goes over the bars?
Have you ever ridden a bike?