Oddly enough it was idle power. Thats what shocked me...5 years stalling PA28s - never had one enter an incipient. Mild...um when I say flick I am talking about about the speed of entry to the incipient (which from my aerobatics seems similar in speed to a flick) - so it was pretty rapid....suprised me as well I can tell you...One moment happy in the stall, next stood on a wing tip!