Thank you FWIW for adding to the discussion.
I would like to propose common sense. When something is true it is coherent, is self evident, and needs few if any words to explain.
I have attached a photo of a crop duster with the same engine and propellers as the King Air had in Hawaii. This guy just had his brakes locked up while taxiing. No full power, was just at idle, and at low RPM. Then look at the propeller at the Hawaii crash that looks like it was just windmilling at the time of impact. Also, the one damaged blade does not show rotational damage on the Hawaii propeller. It is snapped in two at almost a 90 degree angle showing the blade stopped rotating as it was dragged thru the ground. Notice the tips of the blades showing rotational damage which is not present on the Hawaii blades.
What makes more sense to you guys? I appreciate the discussion and different points of view! God Bless!