User blog comment:IamJakuhoRaikoben/Chapter 495: I'm Hungry As Hell, Review./@comment-5672982-20160725171838/@comment-88.145.190.16-20160729193209

unless crash and disassembly can violate the conservation of mass and energy he would go from buried in rock to buried in dust. Which would be worse because the mass burying him hasn't gone anywhere and he would be breathing in what ever he broke the rock down into which could be fatal depending on what it was and if he was in a confined space or not (think being trapped in a mine and the only thing you have to dig yourself out with is explosives). assuming Gildarts could escape that situation on his own (otherwise virgo would have to dig him out) it would take time, time in which Serena could kill the rest of FT.