Sorry SAS, I deleted my post while you were composing yours as although it was a good post on pressonitits it had one major flaw in its arguement (i.e. remaining fuel) which didn't add anything worthwhile to this discussion - I realised it too late.
Re switching off the transfer pumps, the deleted post touched on going to the edge of the fuel envelope and getting away with it a few times before and the bad habits it produces. Anyways, my post was irrelevant because there was fuel remaining when the donks stopped.
At least one worthwhile opinion from my deleted post:
Judging from the nature of the damage my feeling is that the 2t machine did not freefall from 1000 ft.