Harlan, thanks so much, that was the ticket to me seeing progress. More grinding. I had been trying to save the base material (arm) and sacrifice the shaft. I've stopped for the day, and have a full circle of weld break on the back side to show for my work today. I'm 12lb sledging from the front side, so I'll want to keep that stub for awhile.
DeadNutz, thanks for the vid. I had searched previously, hoping to find a forum (trailer building, RV, etc) to no real luck, along with Youtube. I guess it was the "spindel" spelling that did the trick.
I'll probably try a ball joint press later, or fab up a bottle jack press to assist.
More later, when I have time. Thanks guys! There is hope.