You know what would be super cool? If Anon actually went out and found the hacker themselves. I'm positive it'd be well within their power, and that's the best sort of PR they could get right now.
Course, I see no reason as to why they'd want to, unless the majority of them were personally affected by the PSN hack themselves. I highly doubt they give a rat's arse what everybody else thinks of them anyway, as to whether or not they hacked PSN themselves.
Still, just a funny thought. Sony all but pointing the finger at Anon, then all of a sudden Anon are like "we've got your man right here", while Sony mumbles a half-hearted thankyou under its breath.