How to kill a vermitid sanil...

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So.... I bought a small frag of Poccillipora(sp?) almost a year ago and it came with a vermitid snail. I asked about it back then and was told "don't worry, the pocci will just grow over it". Well, needless to say, here we are almost a year later and all that has happened is the snail has grown along with the frag. How do I "remove" it from my life?