holly Mantis shrimp

[dockrat]

well i came home this afternoon after work and looked into my tank to find a mantis shrimp staring back at me.... Holly crap where did you come from ? I have had my tank for about a year and this is the first time that i have seen him, and i spend hours sataring into the tank... I havent added anything that he could have hichhiked on for about 8 months just frags... So he must have come in with the rock... lol well im going to need to set up another aquarium my girlfrend is going to kill me oh well... So how do i get him out? he lives in a rock that most of my other live rock sits on so a fresh water dip is out of the question (for now) tearing down the tank is a huge hassel... I have tryed the pop bottle with shrimp with little susess for crabs so does any one have any ideas? any links on mantis shrimps would be great i would like to id him (if i see him for more then 3 seconds)
any help would be a big help.... well im going to surf the web to get ideas
kris