Hi, The next paragraph of the trainingcom, which I have pasted below, seems to say they do not recommend holding the aircraft in a developed stall?
Two points should be emphasised here: firstly, the purpose of the stalling exercises on the PPL syllabus is to ensure that students can recognise the warning signs of the approaching (incipient) stall and the symptoms of the developed stall, and be able to recover safely from both incipient and developed stalls. It is not necessary or advisable, having demonstrated the signs and symptoms, for instructors to hold an aircraft in a developed stall, and students should never be taught to do so for the purposes of this exercise. Secondly, instructors are reminded that rudder must only be used to maintain balance (prevent yaw) throughout the stalling exercise. The essential components of a spin are wings stalled with yaw and/or roll present. Deliberately inducing yaw with rudder to “pick up” a dropped wing, with the aircraft stalled, is tantamount to setting up for a spin.