I spent 1 minute with accumeasure (download on the Uk Halsey site), result attached. No significant twist in that mainsail, but you really should flip the boat over when taking photos like this, so you can get some force pulling on the leech.

Lots of gotchas to look out for in that analyzis, especially the top one where I dont know the angle of the batten! I would say the sail is a bit deep for my taste all over, but the twist profile is where I would expect it to be with no kind of force pulling on the leech.