Funny how people think that lowering aileron will cause the wing to stall but it doesn't occur to them that lowering the flaps didn't cause it to stall! Ailerons going up or down when the wing is near the stalling angle do not cause a stall and do not cause washout either. Those effects happen much further forward on the wing than the aileron. So called aileron reversal close to the stall is not the downgoing aileron causing the wing to stall but is a mis-reading of the much greater adverse yaw that occurs which then leads to a yaw-roll coupling in one direction that is greater than the aileron induced roll in the other direction, hence the appearance of aileron reversal. The out of balance flight may also promptly leads to a stall on the inner side of the yaw so the whole effect is generally mis-read as the downgoing aileron causing the airflow to stall. Putting both ailerons down, as Gordon suggest, does not cause that part of the wing to stall sooner, and will reduce the stall speed. What it does do, as Gordon makes reference to, is increase the adverse yaw when aileron is used and that can be a danger which leads to a tip stall but as Gordon says just use coupled aileron rudder or use your left thumb very carefully. But small downward deflections of the ailerons as minor flaps is not likely to lead to such problems.
H