Hermit crab damaging rhodactis?

[imapieceofpai]

I have 2 tequila sunrise Rhodactis mushrooms. I saw one of my hermit crabs in between the two, with a small bright green piece of coral lying on the sand bed below where the corals are located. I picked it up and placed it back with the other mushrooms.

I was wondering if the hermit was somehow responsible, or whether the mushroom somehow split? Either way, will this small piece be able to survive? (The hermit is well fed)

 

[blaxsun]

The mushrooms look fine and I can't see why a hermit would take an interest in it. It's possibly it grew another head that simply detached and floated down, but I can't tell if the bright green dot is a mushroom or simply a polyp from another coral.

Will it survive? If it's a new mushroom quite possibly. The best thing you could do for it (if it's a new mushroom) is to place it a mushroom cage with a frag plug.