I have to agree with Dion in that I think having a bunch of folks out on the runway (or anywhere near it) while trying to fly that thing was tremendously dangerous and shows a real lack of respect for the potential danger. You would think that somebody with the skills to build such an airplane would know better. Of course, maybe Mr. Pilot and Mr. Builder were not the same guy. I don't think the airplane was horsed off too early myself and, though a bit underpowered, I think it would have flown just fine. What I see, and what others have pointed out elsewhere on the net, is what appears to be a case of reversed ailerons. If you look closely at the right aileron it appears to be deflected way down during the final moments. Another bit of carelesness by the pilot if that is the case.