Regarding Ruth's problem, perhaps the simple answer is the guy was being a jerk. The trap of the martial arts is to start blaming yourself for other people's problems. The classic example is when a martial artists insists that the fight you got into at some point could have been avoided, essentially blaming the victim for having to defend themselves.
If the guy knew what he was doing and wanted to teach Ruth what to do, then strong arming her a bit would be appropriate, and George's response would be dead on. But that's not what he was doing.