Yow...
That sounds pretty heavy duty. I think my bro has a dremel, but not sure if has cutting wheels, or if that little thing is powerful enough to kick a$$. Maybe the way to do it is to climb under the car and see if you can get a wrench onto that bolt from below. I'm thinking the control arm might get in the way, unless the sway bar rotates up and back (which it will to some degree) which might grant access to it.
Massiv.
