First time I saw that video.
It screamed out "COG out of whack!" to me, but the report also cites, in addition to COG shift, damage to hydraulics and H-stab.
FTR, I am the paranoid guy who ties down loads so securely that my wife and FIL usually just cut my lines when she arrives with a load of something or other in the truck. Whatever. It really is not that bad if you use my quick-release knots. In any case, I am going to make damn good and sure stuff is secured against any reasonable eventuality, save maybe high-speed collision.