StopStart #348: "Those of us professionals that work" "The tie-down scheme is scientifically designed to provide fore, aft and vertical restraint off the load to, in this case, the pallet".
Aircrafts are also scientifically designed, but still accidents hapen. If the loading in pic @ #352 was made by using the best available science I now understand why Al Gore got his Nobel Prize.
I agree with Dimitris @ #353. A gentle amount of braking g`s and the straps become loose. Of course, @#352 is not the picture of this flight, but there is also the possibility that the cargo was strapped even worse.