A wing with an aileron down will stall and drop sooner than the wing with its aileron up. It's as simple as that, and that guy was slow enough to be tickling the edge of a stall/spin. I don't care how capable that airplane might be; it will still kill a pilot who abuses it. It's fine to have a skilled pilot in an unforgiving airplane, but I cannot call a guy who does flat turns at low airspeed and low level "skilled." He more likely thinks he's being safe by avoiding the increased load factor of a bank.
Why would a pilot flying exceedingly slow be in more danger of a spin in an airplane that is capable of turning in a flat level plane
than the same pilot in an airplane that has to bank the wings to make the maneuver? If the airplane is in a bank at slow speeds then there is already a difference
in lift and controls effectiveness. Although a bank is usually part of a turn, as speed declines it should be easier to enter a spin than with entry into a spin from a
wings level condition. Please explain why you feel this is more dangerous.
I have a copy of a factory video for the Slepcev Storch. It is a great demo video with lots of flat turns and take offs over tree obstructions.
The airplane dances about in a field and seems more like a ballet or a butterfly the way it flits around. It is truly an amazing airplane. It's a
shame is isn't available on Utube. Some of these planes with slots will do amazing things that non slots would never attempt. I think maybe
the flight envelope for these fantastic flying machines is a little shocking to the establishment as far as accepting flight that goes against
how they learned to fly. I have seen video of a Pegazair doing the same maneuver.
Also, with the slats keeping better airflow and thereby better controllability, if a wing did begin to drop, wouldn't the slot wing be easier to recover?