I thoroughly enjoyed Aiki Peace week 2015. Many thanks to Sensei Piers Cooke and Sensei Tony Wilden.
We have practiced what we call the unbendable arm previously on a few occasions but this move felt completely different. I trained with Mike from Neil Stark's club in East Grinstead.
We were taught to stand in a relaxed horse stance posture with one arm out in front. Our partner held underneath our arm just above the elbow. When I tried to force my arm down with muscle, with Mike trying to stop me I couldn't move it at all!
Then I put both arms out and thought of the other arm being free, I dropped both arms at the elbow and Mike fell to the ground. Mike and I had several turns, but were still as baffled and amazed as the first time!
I guess when you focus anywhere apart from where the attack is, this makes the attack less important and therefore weaker. Mind over matter.