Finally, can I draw your attentions towards the recommendations section of the NTSB report:
Develop and disseminate guidance to transport-category pilots that
emphasizes that multiple full deflection, alternating flight control inputs
should not be necessary to control a transport-category airplane and that
such inputs might be indicative of an adverse aircraft-pilot coupling event
and thus should be avoided. (A-04-59)
Amend all relevant regulatory and advisory materials to clarify that
operating at or below maneuvering speed does not provide structural
protection against multiple full control inputs in one axis or full control
inputs in more than one axis at the same time. (A-04-60)
Taken together, these recommendations are the reason we have cauitionary notes in our AFMs, and why I believe EVERYBODY has such notes - we were basically ordered to put them in following the accident. Because they apply to everyone.