Since Vr follows V1 and your aircraft refused to rotate, what do you think ANY pilot is going to do? I mean, really?
Well, Option B is to make it rotate using the THS and possibly reducing flap setting. This opens up many cans of worms but also opens up the possibility of saving the aircraft.
I'd rather take my chances with the abort though, unless perhaps faced with an obstacle like a deep ravine or something else equally unsavory.