Thanks for all comments and valuable insights
@BOAC - I fully agree. Fully stalled you are left with rudder only. Now in that situation I would give it a try. We tried both ways into bank = spin out of bank depended on situation and pitch up = nose went up nearly vertical or rolled over. But then again this was in an aerobatic single.
BTW. To have it flip was part of the fun
with an EXTRA 300 at 5'000 AGL. We also managed some recoveries.
@ Mansfield - Agree the notion was merely about the forces involved if pitch trim was at the very back. This will be type dependent. Sadly true that maybe elevator has not enough authority. I'll modify it later as it has more to do with asymmetrical flight and applies only to aircraft with conventional controls.
@ PEI 3721 - I should have added: "Never ever give up"