It seems to me that Phil is not asserting that his behavior toward the student he sarcastically described as an "extremely high ranking nidan" was proper, he's asserting that aikido's lessons are unlikely to overcome a student's basic nature, and he offers himself as an example.
While he refers to aikido's lessons, he doesn't specify whether his encounter with the nidan was in aikido or judo. Suppose, for discussion purposes, that the encounter was in judo. Would that change one's opinion of his behavior?
No.Whether it was Aikido /Judo or whatever is irrelevant.Taking liberties with a person who is technically inferior to prove a point imo is abuse.Cheers, Joe.