Update -- it is off. Left work on time for once, put two other nuts on loose and dropped the wheel/tire onto a few 2x4s to wedge the wheel into the spinning stud. Hit it will the impact and it spun off.

Sorry for the drama guys. Like I said, just didn't have much time this week to mess around with it. The last attempt with the impact was with the other nuts tightened up so there was no load on this loose stud.

Thank you for all the help. Now to pull the caliper and disk and see what happened.