the most important takeaway from that video... GLOVES!
Are you serious?
let's talk about the MOST important takeaway. i did some digging on this, saw a variety of emails and correspondences. what appears to have happened from what i have seen is:
1. the rider wanted more armrest height.
2. a junior, temporary, replacement, mechanic gave into the rider's wishes.
3. this meant adding pedestals above the stated limit (60mm), and from what i read not just more than 60mm, but up to 75mm.
4. and most importantly, without changing the bolts!
now, just spitball with me here for a minute. in the image above i'm showing you bolt sets and pedestals, from another manufacturer of bars. but this looks pretty much like what i get from everybody: profile design, 3T, zipp. you get pedestals and you get bolt sets and these bolt sets here are in 5mm length increments. that means EVERY pedestal config comes with its OWN bolt length. you add 5mm of pedestal, you use this DIFFERENT bolt length that's 5mm longer.
so what we have hear is that the bars were pedestaled to their max, 60mm, and the company did not i presume provide ANY bolts longer than those needed for that max, because that was their max. the wrench must have (i presume) broken into a new pack of pedestals, dug out a 10mm and a 5mm, put them in, but used the bolts that were 3 sizes too short, with 15mm less thread engagement than the designer intended (and on a pedestal height beyond the manufacturer's spec).
so what did anybody think was going to happen when that rider went over that speed bump?