Quote Originally Posted by kiki32 View Post
I saw the video as well and what I took from it was that he was too low to make his desired landing area (the street) and tried to make it anyways, clipping the edge of the building directly below him. More information on this would be awesome.
I think this is about as much information that you can get. Anything else Ueli was the only one who could tell you. But I think your observation is realistic in terms what happened.