Re: Overriding uke's determinism
Here are a couple of things from my perspective:
1. Aiki is not morality. I think equating aiki with a [good] morality leads us to make erroneous judgements about what is and is not aikido. Saying something like "uke is not doing aikido because he was to cut off nage's head" presumes that the person cutting is bad. This presumption may be wrong.
2. Harmony is subjective. We use word like harmony in aikido with the presumption that harmony as we view it is the absolute harmony. This presumption may be wrong.
Uke and nage are transitive roles within an confrontation. The assignment of morality, harmony, justice, etc. to one role over the other will break down as soon as uke becomes nage, and nage becomes uke. In henka waza the roles of uke and nage may transition a number of times. Uke and nage both should be practicing aiki; either uke is better than nage or nage is better than uke.