I know exactly where you're coming from. I learned to fly gliders first until I could get a power licence so I could fly aeros. Twas before gliders became properly aerobatic.
The problem is that if one is, how should one put it, negligent enough to let the speed fall to such an extent that a stall is iminent, how can one be expected to keep the ball in the middle?
Typically, while holding the aircraft in a full stall, one or the other wing wil drop and be caught on the rudder; one cannot consider this as a stable flight condition.
Also, if you are using the standard Pitts approach technique, I'd like to ask how this is relevant. You may make a perfectly balanced final turn, but then push in the crossed controls to keep the runway in sight.
Of course it's the stick position that's going to kill you.
Brendan showed me some flat turns a few years ago. Picture this. Halfway down the downwind and he simulates an engine failure. Rolls into a steep dive towards the runway, becoming level and parallel to the runway at about 5-10 feet. Then bootful one way, bootful t'other way and flare onto the runway. No messy (and dangerous) low level turns (as long as you've got the speed).
Another lesson learnt!