Guys, the source code RedEye was using is said to be a copy of the original. The only way to get the actual full FH source code is through KovuLKD, and you ether have to get it from him yourself or hack his hard drive to get it. Like what SkullFrost said, RedEye ether got the source code from KovuLKD privately or it's a full remake. I doubt it that Red hacked anybody or got the source code from a distrusted source. In any way, Red does have a right to create a copy as far as I know. Besides, I don't think he would ever use it again because of the hacker incident, but if he actually releases a FH copy client in the future it's pointless to harass him about it.
As for the hackers, It's highly unlikely they received the full source code, or even any important code at all. It's nothing to worry about anyways because they are unable to do anything with the original FeralHeart. They can't do much with what they may have got (or not, perhaps).
To be clear, don't take anything I say for granted. I have no idea what's behind close doors and I understand it's not really my place to say anything. If what I'm saying is false or foolish then I'm sorry. I'm just clearing up some confusion by restating what I had observed. I wouldn't like to see more drama happening in this community.