You know... Living in a world that requires people to turn a blind eye to things, that expecting that people be the mature person, or the stand-up type of gentlemen...I would say that you were wrong. But knowing what I know about people, and knowing how nice guys always finish last...I commend you. Of course there will be some on this board that will tell you that you should have called the instructor over and let him know, or you should have just taken it with a grain of salt and let it slide, or you should have refused to spar...but hindsight is always 20/20. You are 27 years old, far over the age of answering to anyone but yourself. You made a decision and whether or not you agree with it after the fact, that is what you did. I would have done the same. If your TKD is better than someone elses, that is not a fault, and you shouldnt take it as one...jealousy and envy rule our world, and it makes people better themselves, or take advantage of situations that they can be clever enough to take. Personally, I would have done the same thing... I wont let myself have people gunning for me, without doing a little gunning of my own. I am 23 years old and a Kukkiwon 4th Dan (I started as a POOM for all you guys who think you cant get 4th until 25)... You did what you had to do, dont question it...just know that you did it, and move on...