Who was it said, "Holding a grudge is like letting someone live in your brain, rent free,"?
This is true. I don't know whether she said it first, but I think it was Ann Landers. It's certainly not the Christian thing to do
Having reread the thread, I feel that some people are unintentionally feeding the hate has been posted on the Interwebs. I will even go so far as to suggest that some never actually read what Zumbo wrote, or what was written and done after he realised his gaffe. I am not suggesting that you should forget, just do the Christian thing - forgive and move on.
By constantly dredging this up, the anger is fed. Keeping this incident alive is not helping. Let it go. Don't feed the beast. It's counterproductive.