Re: multiple opponents / ending fights
I got to see the "Tiger Team" who do TDK. One of the best things in the demo was that they handed out a lot of apples to the audience and asked everyone to start throwing the apples at them at once. They punched and kicked the apples to the point that no one got hit! It was awesome! At the time, I was wishing I were a major league pitcher! I'll be the first to admit that I don't think I could move that well in such a random situation.
I agree with Benjamin Edelen that the thing to do is get out of there. How you relate to people on a deep energtic level (which is practiced in aikido) might be the best thing you have going for you - even more important than apple punching skills.