Shy talk, et al,
“If he'd had a yoke, the others could have more quickly grasped what he was doing.”
See #760. The problem was not directly with what the pilot flying was doing, and the other pilot might see, it was the resultant aircraft flight path. By focusing on the controls, the crew could easily have deduced a control failure – the aircraft did not responding.
The presence of a yoke, coupled side stick, or any other control is unlikely to have triggered the required change of mindset. The problem was that of what was going on out-side of the aircraft and not inside. Excepting of course for the human abilities to assess and understand the situation which required a change of control input.