I don't know what to make of that.
On the other hand, why did he choose to be pushed down at all when he could've just stayed standing.
Did you ask him to collapse or did he volunteer?
In the front fall technique, he had to fall. He had no choice in the matter. I gave him a front roll escape.
In the case where he did a back roll, that was his choice. He could have just done a back fall. But he had to fall.... no choice. Resistance may have injuredhis back.
In the thread discussing Daito, Yoshinkan and Tai Chi Secrets, I laid out a large part of my methodology. But it is hidden in plain sight unless you spend time with learning the principles and working it to death -making the movement smaller and smaller.