that stuff would just burn right off cuz of the heatOnce you get lucky, and get them all out (I guess in bits an pieces), and then have to install new bolts/nuts, it sounds like brushing on some super duper high temp *anti seize* compound, would keep you from having the same problem down the road.
Actually not so much believe it or not. I think its cause its not exposed to air but rather sealed into where the threads are. I know I've put anti-seize on O2 sensors and years later removed them only to have the anti-seize still be on the threads. I always use anti-seize on exhaust bolts so they an removed easily later.that stuff would just burn right off cuz of the heat