Strickland is a good guy, just screwed up. . .all it takes in once. . .
If you are referring to the Hinter. . .didn't see anything that would involve a stall of any type.
To me it looked like he mushed into the ground either partially or fully stalled, and the last second wing drop adds to that impression as it may have indicated an incipient spin. I suspect he didn't have the altitude to complete the loop and upon pulling back to avoid the ground he stalled and crashed. What is unknown is whether, even if he had kept the wing flying by pulling out more gradually, he would have had the room to avoid the ground. It doesn't appear that he would have made it either way, though the video unfortunately doesn't show the aircraft at the critical moment in the pull-out.