Sorry I didn't post a conclusion to this. By now, I have forgotten exactly how I removed it but it seems like I grabbed what I could with pliers or vice grips and plied, pull, tore it out I think. Unfortunately, threads were boogered just enough that I couldn't get even a metal plug to run in and clean the threads, primarily because the very edge got boogered as well, thus preventing anything from starting. I believe I then minimally got a tap started, ran it in slightly, then replaced it with the metal plug, which I kept advancing as far as I could comfortably and following it again over and over with the metal plug, then finally inserting the plastic plug. Either the threads are longer on the new plugs or I don't have it fully inserted, but it feels as tight as I want to chance. I will know once I hook up next spring, at which time I believe some teflon tape will finish the job if it is leaking. I certainly hope so lol. Thanks everyone.
