I was sickened by the video and can't recommend that anyone look at it.
I'm sorry, but I don't see how posting that video adds to the discussion at all. It would be sufficient to say "two people were mistakenly cut off the line and were killed/severely injured in resulting fall".
I have many, many videos of crashes, mishaps, etc, but I only keep those that lend some sort of information as to cause and have some sort of educational value. This video provides no useful information at all and has been permanently removed from my system.
To other viewers - don't bother.
Cheers,
wishtobflying