I never like to just throw them away even if it looks like it wont make it. If its still moving, just leave him in place but keep a good eye on him because IME it probably wont make it another day or two. I dont want to come off negative just trying to tell you like it is.
I see in your gallery you have MH lights so thats definitely a plus because its a Crocea, one of the higher light clams. Have you had him long?