I logged in one day and suddenly noticed I was under the old account, but it wouldn't let me be the administrator.
I logged out and logged back in and I was under the new account and administrator again.
So I looked at the administration panel and it looks like Activeboard has made a change that allows for the undeletion of all previous accounts (at least the ones that weren't switched to Anonymous after they were deleted or closed).
So all I had to do was give full privileges back to the original account and I was in bidness
I got my 20,000 posts back I was thinking about it. When Ruby comes back I don't think it would help her to reinstate her account if I can because I think she has more posts in her new one than in the original, but if Dylan ever actually returns (he signed up for a new account a few weeks ago) I could just reinstate his original and he wouldn't lose all those posts he had.