Will my skeleton less Acanthophyllia survive?

[cheesecurls]

My acanthophyllia bailed out when I was on vacation. It's been 2 months it became skeleton-less.

Funny thing is sometimes I saw it floats around then I just put it back behind the rock which has minimal flow. See video.

Any advise if there's a way for it to grow its skeleton back? Thanks

 

[cheesecurls]

 

[cheesecurls]

Up. Is there a chance that it will grow new skeleton? I'm planning to put a transparent saucer like on top it to prevent it floating when hit with high flow.