Good morning meowzer....I hope things look better today. If not.....
One thing more for you to check...stray voltage. One of those little hand held testes is all you would need. A bad power head or anything electrical could be sending bad vibes. My fish were totally unaffected by my broken heater (big zap) and my fire shrimp lived through it as well. So a some stray voltafge could upset the corals and not bother other critters.
My corals looking mad and sad was my indication something was amiss when my tank got zapped. Just a thought, looking at all areas to solve the mystery.