Every cue I've removed the pin from was very simple, almost no risk of damaging the cue or the finish.
Heat the pin to the point that the glue fails, clamp the pin in a set of soft jaws in a vise, unscrew the butt with your hands...you know, like how you take a cue apart.
It ain't rocket surgery.
Did you see the picture showing the pin is broken off near flush with the butt?