When I read this part of the article...
The Aiki-age of Sagawa Dojo is like this. Absolutely no bending the wrists, close your armpits, focus your power on the point at which you are grabbed (Aiki is an internal sense, so this is difficult), relax your shoulders and raise your hands up without changing. That's all.
...it reminded me of this from a while back on another thread:
"Always open your hand like a morning glory ("asagao")"
And here's one by Yukiyoshi Sagawa that I think has not generally been made available in English:
I was told by Takeda Sensei to open my hand in the way that a Morning Glory ("Asagao") blooms, but I think that this means to open the hand while rotating slightly. I conceived of my Aiki while thinking about this kind of thing.
And also this photo which is on one of the monuments on Ai Road in former-Iwama: