There are Few Answers, Outside of the Obvious
In theory, despite all of the events that had taken place on the plane prior to the crash, the plane should not have stalled. If it didn't stall, the plane would have continued to glide in the air, and the co-pilot would have attempted to land it at the nearest airport. Something was fishy about the whole thing, and British Airways wanted to get to the bottom of the mystery ASAP...