lol yeps - I fell victim to that precise point. Whereas i'm not the best racer in the world... I have been racing non-seriously for about 8 months i think now, and I've had my fair share of accidents caused and apologies.
I think I've been banned from one server for a deliberate wreck and that was Fragmasters Oval Junkies months ago.
But anyways my point is this, I see myself as an average racer that for the most part races fair, but like Sam just said, I've had a few moments where i let my aggression take over and start taking revenge on careless drivers... and to which point im now banned by the WB.
If you do feel the need to go act like a dick or cant control your aggresion then either go take a break, or just log onto the demo servers. One little mistake can cost you dearly...