I'm not suggesting that Red Bull is a "rogue" outfit, but I do think there is a culture of major risk taking "Extreme" sport associated with Red Bull. This culture will invariably result in much reduced safety margins. There is a phenomenon in aviation called the Rogue pilot. Ray hit on this with that high time B-52 pilot that speared that BUFF into the ground. Now, I'm not suggesting that either Paul Bonhomme or his partner are rogue pilots, but this phenomenon occurs generally with pilots with pretty healthy egos and can be very experienced - so experienced that they reduce their safety margins to nothing.
This stunt had stuff all room for error. The more I think about it, the less I'm impressed. I've been in a aerobatic aeroplane being flown by a highly experienced instructor who had his rogue moments. Once in a Pitts and formation with a Zlin-242, he was showing off as to how close we could get. Well, we got too close and hit the wing tip votice and rolled towards the Zlin - kind of a soiling the pants moment! Last time I flew with him he decided to show me a vertical snap roll in the Pitts just above the runway at Tooradin. He dove the Pitts beyond VNE at the ground, levelled out just above the runway and pulled into the vertical and did two snap rolls. So there we are about 600-700 feet above the runway with zero speed. He stall turned and pulled out just above the runway. That was it for me with this guy. It was all about showing off in front of others. I have very luckily survived three rogue pilots, so I guess I'm a little sensitive to flying "stunts". Yes these guys did it in what must have been controlled and ideal conditions. Who will try it next and kill themselves or others?
They are in the record book now I guess.