Twisting the leathers??!
Push stirrup up back of leather.
Push portion of the leather that is where the stirrup used to be up thru the stirrup and then up in front of the stirrup so it is now in front of the stirrup but has come from underneath it. The photos show it going back thru the stirrup, I do not do this. Then take the tail of the stirrup and run it thru the loop at the bottom that you now have in front of the stirrup and tuck the tail back into the keeper.
Stirrup can not go anywhere. No twisting or knotting or anything.