Sponge Question

[TAZ]

Unfortunately, I did expose the sponge to air. At the time I did not think anything of it as the guys at J&L did this when they bagged the coral up. It was only after I started doing research did I discover that they should not get exposed. Is there any chance this coral will come back to life? Or should I cut my losses and get rid of it now? If it is dying, does anyone know if it releases toxins into the water (which might explain the cloudy water).