big vice grips??? geeze... I dont' know without a lot of tools to torch it, grind a slot or weld another lug nut to the top.
But, is there any chance that there is a key in there anywhere? Check all compartments, owners manual folders, etc... we ran into something similar with corvette my dad bought, then we found the locking key down in the pocket of one of the doors.
Also, see if there is a tire shop you can walk to. They usually have universal ones to pull those off easy.