Daniel, I think Nick is being very fair and reasonable with his offer.
I spoke with him on your behalf via PM last night and have gotten the whole background story and your replies to him.
I too have been warned once and I also took it personally at first until I sat back and realised that it was in the best interests of myself and the forum to not take it personally as that was not how it was meant.
Life goes on and working things out is always the best way, instead of getting your back up about it and involved in some kind of flame war that you can't win.
Nick has made an offer of concilliation when he doesn't have to, I think it would be reasonable to take him up on it. We all make mistakes, so do you learn from the mistake or carry on doing the same thing?
Cheers Chris