First off, they didn't move on to other projects, they just stopped this one for the time being. And the issue wasn't so much the use by others, as much as the abuse by this forum. That is, members were taking it, demanding their rights to it, and then defending people who took models and used them without permission and credit. The authors of the mod decided as a whole that it is best to step away from it all, let people come to their senses and realize you don't have a right to ANYTHING, especially that which is provided to you for free by someone else. Either way, production of this mod is at a standstill right now, it's not completely dead, but it's awaiting a better climate to survive in.