Okay, many thanks all. Will try the least invasive procedures with hammering it a bit, heating it up and grabbing with a vice grips. If this doesn't work I'll escalate from there with the more involved procedures. In the mean time, I'm going to give it several days to soak up the PB Blaster and heat. I hope to report positive results in about a week. Thanks for the MANY excellent ideas - it's much appreciated!