Brain Problems. *More problem critters found....sigh*

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So basically ive got a bit of a problem. The brain coral got picked on a lot worse then I thought it did when the shrimps and crabs were reaking havoc in my tank. (I had it shelved in the tank and they still found a way to get it somehow) Now that I have moved to the larger tank and got the shrimps and crabs out ( had to smash a piece of LR to get the last crab out) everything seems to be much happier, specially the acros. That is everything except the brain coral. I feel really bad about this, it was a beautiful piece that I got from whatcaneyedo. Does anyone know anything I can do to help this thing heal? Ill do whatever it takes. First pic is where it is in my tank. Second is Aug 30 after the move. Last is today. Everything was right in spec a few days ago but I will grab all the hard numbers tomorrow after work. Wondering if its too much flow? Too much light? Not enough light? ( Was thinking of lowering the halides from 14" to 12" this weekend) Do I need to worry about the exposed skeleton? Will it heal over? I try to spot feed but no feeder tentacles come out to grab anything. Thanks for any help.