Nah, didn't do that. There was probably as much material on that magnet as there was on my '98 GT when I yanked the pan @ 115k~. So it wasn't nearly as bad as I would have thought.
I will however probably do another magnet this spring though. Maybe place all of them all over the pan? lol.
http://www.ebay.com/itm/12-Hard-Driv...-/251075998624