Bummer. Looks like all six people on board (five crew members and one passenger) are dead.
No info yet on whether this is another case of a B-52 pilot stunting a plane which is deadly when you exceed its operational parameters -- see the case of Czar 52. The B-52 is not an F-16, and if you exceed its flight parameters, it stalls and falls out of the air at an alarming pace.
More info when available :-(.
-- Badtux the Flightless Penguin