Unanticipated yaw problems do not come from missing pedal, but from not using the available pedal.
I'm pretty sure that is essentially what I posted.
I was instructing on the Gazelle in those days and most of us thought the idea of a 'stall' was rubbish - and so we were proved right when Aerospatiale showed the video of their TP recovering from very high rates of left yaw by using maximum right pedal.
One of the reasons for the reluctance of pilots to use enough right pedal early enough was the torque spikes that occur from rapid right pedal inputs, easily enough to get the torquemeter red light flashing - this was very evident in the Aerospatiale video!