None of our equipment was destoyed. I don't know if the DM just didn't see the ability (because he really loves breaking our gear) or if the Major Image I cast to make it look like we were just a rock fooled them. The nice thing is I made my knowledge planes check to know that they are mindless so I just cast a simple illusion. My reasoning was that Vermin and Insects are too stupid to know that rocks shouldn't be able to move.