New RBTA - How do I get him to stick?

[Myka]

Hey guys! I have only have one anemone in my life, and that was a Condy back in ....oh.... about 92 ish. So I'm no anemone expert, albeit I know pretty much everything about them that you can read.

Anyway, I got this RBTA yesterday, and the guy at the LFS couldn't get him off the rock, so I bought the rock too. I drip acclimated the RBTA and put him in the tank on his rock. He puffed up and looked good within 15 minutes. I guess he decided he didn't like the spot I chose for him, so he let go of his rock after about 1 hour. The problem with this is that my tank is chock full of corals that I don't want him to sting. So, how can I get him to stick somewhere? He's floating in a plastic trap right now looking happy as a clam. Go figure...