I took the magnets home and my Dad and I managed to remove them without significantly damaging them (a little of the protective outer covering came off, as it got stuck to the mounting plate) by wedging a putty knife under the magnet and tapping it with a hammer to break the seal. Now it's just a matter of trying to figure out how to mount these magnets to the minibot without hurting anyone or magnitizing every tool in our work area in the process!
Thanks for the help, guys!