Or its just a cover up and they don't wanna publicly state they have the keys. From what I heard its pretty easy to grab them with the correct knowledge. I guess they just don't want Sony to find out and release another more sophisticated FW.
This was leaked, it wasn't meant to be released, and if Moogie didn't leak it we wouldn't even be playing Uncharted3 at all. I hardly doubt they would have released it.
I hope someone outside that circle of devs is smart enough to make something out of it and hopefully fix the freeze issues.
To cut off questions, initially there was a retail disk with retail eboot (3.60+) inside. Obviously, not playable on CFW, the usual stuff, like many other games, Portal 2, Fifa 12, Resistance 3 etc etc..
Yesterday, someone had their dirty hands on unsigned pre-release eboot and signed it with 3.55 keys (or 3.41 or lower, whatever). By replacing original retail eboot in disk copy version of the game with the pre-release one, we can actually make it work with some bugs.
That's why Mathielulh said, that moogie's work was just typing "makeself.." command and no real hacking.