misd-agin, your statement is very correct provided the aircraft flies the same speed. In this case the AOA didn't only increase to compensate the flap reduction, but also (and mainly) because the speed dropped seriously low. Flying just before the stall speed would involve a high fuel flow increase, meaning significant increase in drag. Letting the speed drop so low while aiming too far for touch down is definitely ending in shortening the path with high Vz impact as there's no other way to get back some of the wasted energy to maintain some lift on the wings.