Jack,
You know how common this "issue" is. I saw it all the time on my racing career. God love all the guys but there is such a fine line between bravery and stupidity. I have crossed it many times getting pumped up for qualifying and then subsequently hung the car on the fence.
It is always the same. Showing your peers what "can't be done". At some point, the "experts" have to listen to the guys in the trenches.
These brave pilots told of what was a marginal take off situation to begin with. To have the factory rep come in to show the boys how it is done, was disaster looking for a place to happen and did just that.
The man was a good man, a good pilot, a good rep for the factory but crossed that line. I used to call many of my racer friends, "legends in their own minds". You cannot, in such an environment, believe in your own ego. From my Pop, "There are old pilots and bold pilots, but few old, bold pilots."
God love the intentions of all these guys but what a loss.
My soapbox...