One last thought... When in doubt... throw it out. I'm in no way advocating useless waste of corals but in some cases I think it is for the greater good. Especially when it comes to AEFW's... they are just too hard to treat for IME. It can come down to the risk of an entire system for one coral frag. The cliche 'the needs of the many out weigh the needs of the few' comes to mind.