Moorish Idol and SPS

[seanoman]

We've had a Moorish Idol in our tank for a couple of months now and until recently it has been a model citizen. He is accepting frozen mysis and krill and absolutely loves nori. But lately it seems to have developed a liking to sps polyps...has anyone else experienced this before. I can't seem to find much information about them eating sps, it just says that they may eat zoas and pick at lps.
I'd hate to have to get rid of it, but the corals have to come first!

Thanks