Yeah, and not a week later anonymous hacker(s) took down the Play Station network for 23 days. Either he did it himself and got away with it, which is impressive, or he inspired someone else to do it and get away with it, which is also impressive.
“anonymous hackers”? Publicly unidentified hackers you mean?
That hack almost certainly had nothing to do with the jailbreaking scene. Sony pulled down their infrastructure to investigate an extensive compromise.