Did you boil it in a bag? Not kidding, I did that to get a reel seat off. Boiled until tender, er, for about 10 minutes. Then, I sat and just "worked" it carefully until it unseated. A hot gun might help, but you would have to be very very careful. The "working" part is tough, too much and you break it more, too little and you don't get it out. Oh, are you trying to save the tip top or the rod? Trying to save the tip top may be harmful to your mental well being.
Mike