"By turning the steering wheel all
the way to the right, I could work on the broken stub from the INSIDE
of the left spindle. Yea, I'd have to take off the rotor to attack it
from the outside. "
Uh, oh! I think I might know a big part of what went wrong here.
Geronimo said he broke the screw extractor off. Well, a screw
extractor is made to wind a bolt out to the left, ie it has a curved
face pattern to grab into the drilled hole when turned to the left,
counterclockwise. BUT, since he was attacking the broken bolt from
behind, he was working on the tail end of the bolt, not the head end.
That means you would need to turn the bolt to the RIGHT, clockwise to
remove it. But a regular screw extractor wouldn't work that way, it
would just slip. Did you use a special left handed screw extractor
(assuming there is such a thing), or were you turning it in the wrong
direction? If so, that would explain why it wouldn't come out!