As you've learned, once can't truly delete posts. I did see some other advice here, so of course I'll put my two-cents in as well. Sorry in advance if I'm overstepping...
Dunno if you'll come back or not, but here it goes:
On message boards, it's easy for people to get bent out of shape. It's unfortunate to see that you've replaced all of your posts with "deleted post". FYI - if anyone has quoted you, you're s.o.l. and your words remain forever. The other problem with deleting posts is that it's frustrating to check out a thread later and not be able to follow it.
Step up and apologize if you're genuinely sorry. Otherwise, if you've done nothing wrong, stand your ground. This place is but a blip compared to the rest of your life. How much does it really matter? If you feel like people aren't seeing the 'you' that you want them to see, and if it matters, stick around and be yourself. People will come around...or not.
WHY do I think I'm going to need my own advice going forward??