So I can see from the thumb nail that your ball joint was removed from the A Arm. That makes it a little harder to remove. The ball joint stud is tapered and goes into a tapered hole. It’s actually easier to shock the taper loose by hitting the spindle where it mounts using a steel mallet than to hit the stud. But if you soak it in penetrating oil and allow it to sit, you should be able to pop the stud loose by giving it a couple of good whacks. Did the joint break off or something? That’s really weird to see unless it broke and left you with that. Sent from my iPhone using Tapatalk