crossed threads?

You have to see if theyre crossed. With the wheel horizontal on a work surface, does the lock ring appear to be tilted? Then its crossed all right. If it were my bike, Id just wail on it till it came off, but I ride le cheap wheels. Then grease the threads, and carefully thread it back on properly and it should act as its own tap n die. If you killed it, which I doubt, you can replace freehub without rebuilding on a new hub.

Being as far outboard as you assembled it, I doubt its engaging with any splines, thus, turniness.