@UpSideDownCarl, you have invested a lot of time explaining Gozo's issue and the frog pose, I hope it eventually bears fruits... In my past, when I practised other sports, the trainer wouldn't say a word - he just assumed the position and we repeated, or tried to
As I said, I did this exercise many many times, but I didn't know it is sometimes called "frog pose", until I had a desire to mention this exercise to Gozo. And I had that desire, because he seems to be one of the rare people who are willing to actually do some stretching. Usually that is very unpopular. I may have overstepped though - at the moment this exercise may bring more harm than good for him - thank you for keeping watch again.
P.S. Also the link I posted is simply the first one youtube gives for "frog pose". The lady is nice though...