Alright, kurusu, I did it that way! Heck, and I have small hands, too. When I read the procedure, I thought, no way can I do that. But, I struggled with it a while and finally was able to position my hand in a way to garner some rearward torque. Voila!
Thanks for sharing and providing photos.
Having said that, it is so much easier when I'm at my shop bench to simply press the barrel down against the bench.