I would leave it for now. I agree, however, that the prognosis is not good. Keep an eye out. You will know when it is dead. It will shrink into nothingness and be completely flaccid--it is then when you remove it, before it rots.
I agree.. I've seen my mushrooms do something not as extreme but simular when I was doing a FW dip before placing them into my DT. Your 'nem is basically puking its guts out and it won't be long until it dies until you get it into the proper conditions.
they wouldnt take him back. They told me "due to the fragile and perishable nature of anemones we do not offer returns for them"
I know no one else in my area who would have taken him.. I fed him brine shrimp every day. but he turned completely black and smelled god awfull so i removed him at once.