It was the lower ball joint holding the control arm in place, despite being popped loose. Once I lifted the spindle up and off the ball joint, the control arm was able to drop all the way down. That spring, with chain around it, mostly decompressed, popped out real good when I kicked the control arm all the way down to remove the last little bit of compression. I was glad I had the chain. It wouldn't have done any damage to me or the car, but it wouldn't have felt good if it hit me.