i don't know if this is a common problem or not..but it's retarded and pissing me off and i didn't have this problem with my upper ball joints and lower ball joints...

when trying to take off the castle nut, the ball joint is just spinning with the castle nut...is this normal? how the hell do i take off the castle nut off then? help me out guys!! i need the lower control arms off the car already

 

I presume you mean the ball joint stud spins in the joint whenever you try to loosen the castle nut. There are several ways I've been successful

1) retightening the nut, apply wd40 or other like product, loosen nut and then use pickle fork to loosen stud from knuckle
2) Loosen castle nut while applying pressure with picklefork between ball joint and knuckle
3) grasp ball joint stud with narrow jawed vise-grips in area under dust boot, loosen castle nut
4) same as 1), but apply heat (moderate) before appling WD40.

One of these should bear fruit

P_Adams