Really?
@Bazza
you really want to take your response down that road...
1st the prosecutor will merely need to get a technical forensics team in and have the servers analyzed to prove that no data was actually modified.
2nd Just because this TOR hosting service has been compromised doesn't mean that there aren't others. Let's get real many of these TOR services have been around for AGES! If the war on child porn was really that high of a priority then we would have seen more action against these types of sites.
The fact of the matter is if the authorities are not able to build a strong enough case against a hosted site or their users they are bound by the laws and red tape of their profession. That is where a random collective like Anon is different they are not bound by those same limitations but do run the risk of prosecution if caught.