Honestly I'm not really sure what this guy hopes to accomplish at this point either. Wrt to him acknowledging his spamming, I get the feeling that he's just regurgitating whatever people say about him on the forums and hopes people will listen. It's clear that English isn't his first language, and I know he keeps tabs on these forums as he's posted in them in the past, and when I pointed out that his threats to keep people from blocking him were empty because he didn't have anything marking him as a mod or admin, he suddenly started claiming that he was a new mod and admin. Chances are, he probably just sees what people say about him and parrots it thinking it'll get people to listen to him without actually changing his behavior. As for the constant alts, again, still baffled by that. My only guess is that he hopes to wear people down by constantly remaking so they'll finally just give up and let him spam.
EDIT: Nevermind got beaten to the punch with the new alt.