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It is comforting to consider the lack of excessive g in 447's maneuverings post a/p drop. What may be hiding in the sensed "feel" of less than ultimate g on the a/c are the stresses at the various control surfaces. This is a heavy. The controls are large enough to produce lively excursions in PITCH and ROLL at all altitudes.
I don't know the M/E's here, but I am not one, and am interested in loads, stress, and response; how these parameters can produce damage to the airframe, where local loads cannot be borne. Rapid cycling can damage hinges and skin.
I am not trying to reinvigorate the "Lost VS" kerfuffel, nor the other arguments.
I don't propose the a/c broke, only that it is possible, and that there are hints of the possibility in the data. There are slim chances of proof anyway, to my knowledge, each surface operates in anonymity, though I am sure some doubts can be borne in discussion.