Have to wonder if this was one of those cases like the Heli pilot that defected (after killing his entire crew) and handed the heli over to Ukraine in return for asylum.
Or if it's just Russia being Russia and doing stupid shit out of sheer incompetence.
If you don't know where you aren't, you can't determine where you are. It'll be especially difficult to obtain a difference or 'deviation' so you won't get any corrective commands to drive you from where you are to where you are not...
I wonder if something like the Friendly or Foe system being broken or in the wrong setting could cause this. I think there was in incident in the middle east where an RAF Tornado was shot down by British anti-air systems as it couldn't identify the aircraft as friendly.
TIL... hardpoint is an attachment location on a structural frame designed to transfer force and carry an external or internal load. The term is usually used to refer to the mounting points (more formally known as a weapon station or station) on the airframe of military aircraft that carry weapons