If you usually look for trouble it will find you first. My advice is to fall back. If you were uncomfortable with being there whether or not you had a gun you also had an option to get your wife and leave. When I was younger my wife and I used to go out to all types of places. Shady neighborhoods to see friend’s unfamiliar bars, and clubs. I always CCW but if I had a feeling or if things were going on that I did not want any part of I got the wife and we rolled out!
I agreed with the other posts, call the police let them handle it that's why they get paid the big bucks.
"Better to fight for something than live for nothing."-General George S. Patton
"He said to them, "But now if you have a purse, take it, and also a bag; and "if you don't have a sword, sell your cloak and buyone.'' Luke 22:36