Any hope for this rock flower?

[jman2u]

Hi all! I've had 3 rfa for a few months and recently one had been lounging around, moving and looking generally unhappy. I tried to move him to a new spot but he grabbed onto some rockwork I didn't want him getting into. I gently removed him but I must've nicked his foot with my fingernail. He's been deflated and sad and unable to attach for a week, and today I saw some insides coming out the bottom of his foot. Is there anything I can do to help him? I have a plastic container that I can put in the tank to help him stay unbothered and attach his foot if that would help?

 

[jman2u]

This is the container btw

 

[jman2u]

Update: I realized he is oozing juice into my tank, which is making my corals angry, so I have removed him and put him in a small Tupperware. It's not looking good.