I don't know. I'm on my 2kyu so from a similar level, I'm kind of feeling less aggressive about things than before. I don't know what to say, I don't think running away is the final answer to life but what are you predisposing yourself for?
you can certainly try and may get away with attacking the mugger twisting his arm into little bits and so forth. I think this must be a common aspiration in aikido
link:
http://www.advdojo.org/aiki-man1.html
[tongue out of cheeek by now]
I train in hopes of finding myself able to react responsibly in a situation of conflict. My training might or might not help me there and there's lots of peoplw who are willing to offer opinions about the effectivity of my training or yours (most without having seen it
). I mean I hope to not freeze nor to lash out histerically, to keep things in proportion.
There are other Aiki responses to a mugging than being a victim or creating a victim, but who can know beforehand how things will turn out?
If you decide to be Aiki-Man, best of luck.