Then do a 361 degree check and leave the area
Which is about all you could do in that scenario you described. If your escape and evade was not successful, then you are forced to se your weapon as a last resort. When you dropped three or four of them, I'll bet they would head the other direction.
As the Sgt. Major siad in the movie WE WERE SOLDIERS":
"Gentlemen, prepare to defend yourselves......"
superhouse15 thinks the same as me , I would figure out how to blend in, maybe let a couple fly and turn your back to the mob, gun in the air,,Guess what? your the leader of the mob.. of course I would NEVER shoot into the air were just haveing fun here right?