Thanks Kevin,
Now that he's settled in I think you're probably right. He got the plate coral after I thought he was attached to a rock and he rolled off and drifted across the bottom. I had a net over him while I waited for him to attach but should have put him in the sand first off. The clarkii has dug a big enough hole in the sand that he can't drift much now. I read up a little after his drifting episode and stuck him in the sand wedged between some rocks and he seems content now. Just watch out you curious shrimp I guess.
The LT Coral is about half gone and is looking better but it didn't do him any good. He slimmed pretty good for a few days but that seems to have slowed down. He will extend his tentacles occasionally anyway. I watched it as it happened and thought the coral had got the anemone by the way the anemonie jumped, but actually the anemone got the best of the coral.