I drilled a small hole in what was left of the stud and attempted to use an easy out. Big mistake. Easy out is now broken and it seems to be made of kyptonite as the drill won't even make a dent in it.........

I am thinking of using my die grinder and grinding it away if I can and then drill out the stud and re-tap or heli-coil if necessary. Anybody got any other ideas????? Somebody used thread sealer on the stud threads it seems...
TBF