Machinbird, thanks once again. My experience in this subject is limited and I hope I don't sound presumptious.
At the moment, I have a mental vision of how the aircraft reached the bottom scattered as it is. All I can do is explain the concept as best I can until someone with a better understanding comes along and blows my mental construct out of the water.

Like some of the others on this forum, I've kicked the tin remaining from an accident and tried to interpret the meaning of the damage patterns. There are always surprises to be found. But one consistent fact is that the impact energy is passed through the structure in interesting ways and almost nothing escapes some form of damage.
So if I have presumed too much myself, please be kind as you explain the error of my ways.