removing upper control arm shafts

[85Ram50]

How does one do this? I have removed the control arms scraped them and sprayed them but the outer nuts with the grease zirts(sp?) are frozen and the inner shaft with the two hole spins??? I'd hate to have to pay a mitsu dealer to do it that'll be $100 min.
I've got the lower arm spring and other parts cleaned up still waiting for a few parts.

Edit-I saw a vid on YT for a 68 Mercury that looks right. The guy had to burn it up with a torch to get it off. https://www.youtube.com/watch?v=lrpfz-FZBN0 I don't have a vice or anything sturdy enough to hold it back and let me use my weight on it.
Ideas? Correct process? The FSM doesn't show how to take it off only how to set it.