Re: Spiritual Discipline Driils-Ki (ip?)
Glad you like them. Your response about him using words you use made me laugh as I had the same experience.
To do with arms at their side I'm not sure if I understand exactly what you mean but I do know that I do in many circumstances other than kokyu if you see what I mean.
I did learn how to keep the elbows tucked in for example in bokken training or else they got hit. On the other hand I learned how, for example when doing funakogi undo, you must keep your elbows in. If they go out then energy disperses out through them rather than out through the wrists.
This led me to see that when being held or pushed against or tusseled with you can let the force go to center or more precisely lead it to center with your elbows. So the arms are in when directing the opposing energy in or down and they go out when leading out or for kokyu.
Anyway thanks for letting me know your view.