I have laways found Tha-Flash the way to deal with asituation like that is the way you did, stay calm,look them in the eye,speak slowly and clearly, although your ticker might be going like the clappers,most people don't know how to handle it and they back down,it is nearly always the mouthy ones that back off, I ;learnt a long time ago it is not the ones with scars all over there face that are the dangerous ones it is the quietly spoken voice that is scary, I did it about 4 years ago in a cinema, 3 loud mouths were throwing things at my wife and me, after about 5 minutes of this it was swearing at us,I went over to the mouthiest one and just said,right you outside now,your mates come come as well, i was very scared, but they apologised,so I sat down, they then got up threw stuff at us and ran as fast as they could, prats, I hope you are never in that position again,it isn't nice. but try to stay calm if you ever are, take care, Ray