A bit more backtracking.

Somehow I missed this earlier. Had to remove the rest of the ball joint from the lower control arm. Thankfully it was easy to do.

 

This is the thing to remove:

 

Just hit it with a hammer around the edges…

 

…until it starts to break free…

 

…then hit it some more until it’s completely out.

 

Some cleaning to do then it’s ready for a new ball joint to be installed…