The Disuster

Here's a tip for removing a broken stud, I see you have a welder... Weld a washer to the stud, weld a nut to the washer, a few squirts of PB Blaster while still hot from welding and hit it with an impact. If the nut doesn't break off the stud should wind out, if the nut breaks repeat first few steps. Usually pretty good result. Beats drilling and re taping.