I have. What you do, is wait until it is deflated at night. Take it out of the tank and wrap a rubber band around it, between the mouths. Then place it back in the tank. Once the lights come back on, and it starts to inflate, the rubber band will cause it to rip pretty cleanly. Once that happens, you take it out and use a band saw to cut the skeleton that is exposed. After that, dip it, and then put it back in the tank to heal :). If you check out google or youtube, I'm sure you can find a video of someone doing it. And Seymour is a pretty unique name lol :)