Might similar performance aircraft e.g. a Bonanza also occasionally drop a wing and enter a spiral if you did a similar stall (25 degree bank, flap, adding power as it stalls)?
I have stalled the BE35 (V35B) every which way! A properly rigged Bonanza is a relatively benign beast. However, if a bit out of rig or provoked with gear down, flaps and power, it will get you attention.
Far more benign that the Traumahawk that I used to instruct in which would consistently roll on its back if stalled with flaps and power.
Dr 