I don't know about the rest of you, but the closest the devs came to my credit card info was a confirmation number from Paypal, so yes, your CC information should be safe.
Unfortunately for us, it was seen fit to store our web passwords in clear text, so at the very least those are compromised, or at least in a way that allows them to make it plain text again, since you can view it on the web site. Perhaps also the game password, if that is also stored in clear text. Maybe there's a good reason it isn't considered best practice to store passwords in the clear if it's at all possible not to.
Shame on Phlos for making me change my password after the servers are fixed, and shame on Victor (or whoever) for not keeping security in mind and updating the forum software. As much as I'd like to place all the blame on Phlos, it's just as much the fault of the system administrator when they fail to keep up with security updates, as well as the developer's for writing software with a security problem in the first place.
Like it or not, Phlos' attitude is fairly common among certain types of legitimate security researchers, much less those who use the work of others to crack systems. "We gave you fair warning" is often considered enough in their minds to justify public shaming by cracking the vulnerable system.
The worst thing is that for all we (or the admins, for that matter) know, someone else could have long ago exploited the forum software and absconded with our passwords and just not been kind enough to let everyone know like Phlos did.
By the way, in most states in the US, computer trespass isn't a felony unless it causes monetary damage of at least $10,000.