The heart of the issue, despite many diversions, is whether reaching the non-linear part of the lift curve and pilots lack of understanding of that phenomenon is a contributory factor to these incidents.
Nick, the eponymous hero of the thread, has I suspect made up his mind, but is wisely keeping his own counsel. He knows that the protagonists enjoy mud wrestling more than he does. Besides which, if he wants a technical discussion on this issue, he can probably reach in to his rolodex and find about a hundred people better qualified than us to engage with.
Given that Nick has actually participated in engineering design and actual manoeuvrability flight tests that underpin the certification of this actual aircraft, I'm inclined to defer to him. Nevertheless, the data he posts do indicate that it is theoretically possible that the non-linear part of the curve could be reached transiently.
So we must acknowledge that possibility until such time as the Gods choose to descend again and provide us with further runes to read.