WOW!!!!!!!!! I have been in 110kmph (68mph) crosswinds and add to that the fact when they hit I was doing 100kmph (60mph) and I thought for sure this would happen to me.
Not excusing the mounting of the tie down but given the right circumstances and the winds could easily of exerted a force a lot stronger than the tie downs could have held even if done correctly, add to that the poor plywood / joining and you see what happens. To have the camper lifted out of the bed like that you can see how the gust must have caught the TCer. What amazes me is the relative lack of damage to the truck and camper.
Glad nobody was hurt!