[gtptom]

sounds like a euclid worm, (or what ever it is) unfortnlaty you should pull the rock and scoop the sand below the rock. it is usually not going to come all the way out if he is in the trap hecan pull himself out he is only gonna get bigger and hungrier. put it in a bucket and splash the rock to maintain its life and "it" will come out doing this now instead of later will save lot of trouble it will only get bigger a nd harder to searve eviction papers to.