Unless you were actually there and witnessed the event, it's merely speculation. I've seen half a dozen accidents and heard about many more that were supposedly "witnessed" by others. 9 times out of 10 the facts are grosly exhadurated and or twisted to make the story sound good.
Even "the wing dropped and the nose followed" - Sounds good, but which wing? was it in a steep turn to the left and the left wing dropped? Doesn't sound like a stall to me; perhaps the right wing would then drop. Also, the hard turn at 150 feet or whaever it was?
Did an aviation person witness this?
Stick with the facts as at this point in time there aren't really.