It would appear that these instructors have been encouraging their trainees to maintain altitude during recovery from an approach to a stall. The technique that has been advised is to apply maximum power and allow the aircraft to accelerate out of this high alpha stall-warning regime. There is no mention of any requirement to reduce the angle of attack – indeed one trainee was briefed that “he may need to increase back pressure in order to maintain altitude”.
The "canned" stall recoveries in my Alteon course were basically run along the same lines - minimise height loss. That, of course, is not what you do, as you guys have pointed out, if you're already at full power, stalled and going nowhere.