Sam, thanks for explaining very concisely some of the aspects of the cargo and restraint concepts, and loads on the cargo. Some PPRuNe goodness there.
As to the "ten second mean time" point, does that include simple problems like "pitch too high, need to correct" (a basic scan derived action) or is that a broad average of crews dealing with lots of things going wrong on the flight deck in various stages of a mission?
I ask this due to the phase of flight the crew were in for this mishap:
takeoff/departure, with pilot at the controls flying a departure procedure.
Takeoff/departure and approach/landing would seem to be when crews are most alert, and reaction times at a "best case."
My guess is that this crew figured out things were wrong in somethng less than ten seconds.