That reminds me of how I used to do large tractor and combine ball joints without damaging the rubber boot.
With the nut at the bottom of thread to protect it, put a bit of pressure on it with a hydraulic jack, then bash the side of the steering arm with a hammer, the female part, and it will pop out.
I used a similar method but with 2 hammers, one ballpeen hammer to focus the force toward the steering upright and the other(big hammer) to hit the ballpeen hammer face. They popped out nicely.
Now the question is what is the torque spec for the ball joints?
