Is telling people that you have a MySpace page really getting too close to your students? It's about as socially deep as handing out a business card. That goes double if the content is unchallenging - and fancy dress parties at Halloween in a rather innocuous costume would certainly fall into the "unchallenging" group. It's also worth noting that action was taken *after* teaching had completed.

As for the apology - if your entire future career is resting on it, wouldn't you eat some dirt, even if unwarranted, if it would get your career back?

Graham.