Sorry, can't blacklist anyone on the PSN (Blacklisting, ie naming someone's PSN and casting them in a bad light). I'd suggest editing your first post to remove the name of the person, because otherwise a mod will end up doing it when they see it.
Anyway, not much can be done about the guy on the forums, all you can do is report him if he does something wrong.
Turn my back on this whole world and leave it all behind
This place is not my home. It's got nothing for me
Only leaves me with emptiness And tears in my eyes"
PSMVP: Motivated. Vigilant. Passionate.