The addition of photos to this thread sure does focus the attention of many and provides fodder for speculations way beyond the evidence at hand.
Consider always the #1 rule of observation
Occams Razor
e.g. the most likely explanation for the visual appearance of a piece of debris at a crash site is the impact with the ground.
the most likely explanation .....etc. of a field of debris away from a crash site is a cascading breakup.
The finding of an eureka cause in a single piece of debris is extremely remote.
To extrapolate that single photo to design and operational characteristics of the A330 is quite a stretch in my opinion.