Please help !! Would my Acan be okie?

[MCC]

unfortunately, tonight i found one of the heads on my rainbow acan all closed up and producing this mucus. so I went to push away the mucus and realized that a piece of a tentacle of the torch was in its mouth.

Would it be okie? its closed up and kind of looks bad. do they usually recover? or is it a goner?

it will suck if that one head died, and the rest surrounding it was okie and a 'hole' in the middle.

Thanks!