I have tried to find more on Aiki in yo ho, but nothing much came up. But from waht I have found:
Do I understand correctly it is about being able to become the link that neutralizes yin yang between your attacker and the universe ? Balance out yin yang? (do not know how to describe it better)
The power would be more about ability than actual strength...
You won't find anything.
Aiki is a method, resolving in yo within and without you.
It is more complex than the typical nonsense of doing things; like timing and power displays between you and an attacker.
Aiki begins in you, is perfected within you, otherwise everything you try to do with an opponent that creates kuzushi on contact will fail.
The type of strength produced is not what most people understand and or know how to develop, and for that matter know how to cope with. The dilapidated state of Sagawa-where he couldn't open a jar-is not a requirement. Most people I meet still have this weird notion that "soft" means evading or running away.
a) that is not soft, and it is unsupported
b) it does not exhibit yin yang
They just don't know how to produce power without flexing muscle, so they opt for that evading stuff and call that "Soft."
Interestingly, and in keeping with the tenor of the thread, the world outside of aikido, has tracked that type of understanding for hundreds of years and have discredited it as ...not being part of the "soft"
arts. They also recognized that it was low level, that many can do it- as it requires no serious training or changing of the body. The changing of the body is the cornerstone of the soft arts and here we go again why O sensei said no one can do what I do, because you do not understand In yo ho.