Stuck ball joint in a 2019 Ram Rebel?

[13cumminsj]

I'm trying to install a 2" leveling kit that comes with a new upper control arm and ball joint but my current ball joint is frozen. The ball joint puller just slips and comes off. Used a pick fork since I dont care about the ball joint and it' still won't budge. Trying to protect the knuckle since it's aluminum. Any help?

 

[PurpleRT]

Deadblow hammer and hit the side on the spindle where the ball joint meets. Should knock it lose if not pull out the grinder and cut the ball joint. Might tack a few wacks to get it lose.