Originally Posted by bubbers
This is very hard to understand. He knew the PF was out of control but elected to call the captain back instead of assuming control. When the captain got back to the cockpit it was too late.
IMO, PM (Robert) was still suffering some effects of sleep inertia and he knew it. He just didn't trust himself. He had been awakened only a few minutes before. If he had been fully alert, it might well have been different.