Well for a start I would have forgotten more about aircraft structures that what you would ever know.
You work on / maintain / investigate 777 airframes do you?
And I'm not saying anything.
Looks like you've said a fair few things actually, hence it drew my attention. A lot of speculation and assumptions looking at a photo of something half a world away, but with the conviction of an expert. At least i'm aware I don't know anything about crashed 777 parts