Steve, I suppose this is on a waterline. I would reccomend, replacing the joint intirely. It would be cost effective to do this as opposed to your time. Long runs perpidicular to one another for example will take the flex of cutting out just the fitting. If however it is a drainage fitting an epoxy can be used. Let me know some particulars about your installation as I CAN tell you how to remove the pipe from a larger drain fitting.
