You did the right thing. I didn't care for his "aura" either, and spent considerable time and effort trying to show him what a low life he really is. Although I didn't state it, it was part of what I did to shield the women here from further degradation, so I think it is fine that you were a "Self Appointed Defender."
I would like to tell you a story about my wife. We used to go to this little neighborhood bar. One time I had to take a trip out of town, and she felt comfortable going into that bar by herself, because she knew everybody and everybody got along. During the evening a woman friend of ours asked my wife to give her a ride home. My wife left her drink and her change there so that it was clear that that was her spot. When she returned there was a young newbie sitting in her seat. She politely expalained the situation and asked for her seat back. This young jerk gave her a hard time. She simply said, "I don't think you know where you are." At that point the two men on each side of the seat told the young man to get off the seat and give it back to my wife. I am proud of how my wife handled the situation, and I am proud of my two freinds who helped her. Maybe you and I are like my two friends at the bar that night.