Panda... right... of course it is the rotor rubbing on the stator... not the other way around.
The rotor was not loose & the stator was not off-center.
Replacing main bearings an easy job? By my book, it means stripping the entire motor... trans, crank & all.
GPZ... looks like you hit it... there is blistering all right some small bubbles on the outer face... and there were electrical issues going on prior. The rubbing was at the outer portion of the perimeter and was even all the way around... which made me suspect the bearing... but... I can't feel any play in the crank (doesn't really rule that out though). Is it possible that the bearing IS bad and that the rotor hitting the stator then screwed up the stator ...causing it to overheat? Reversing cause & effect.
I guess it will be best to assume that it's a short... replace the stator... put it back together & find the short.
Meanwhile... I've already started stripping the transmission on my '78... so I guess I'll move forward with that.