Candy Cain Coral got stung

I just transferred everything from my 55 gallon to my 90 Gallon tank and it's day three. Everything seems to be doing just fine. This morning I woke up and checked the tank and noticed that my Candy Cain Coral had some damage on the one side. I also noticed that the sweeper tentacles on the Closed Brain coral where touching the Candy Cain Coral. I am assuming that the Candy Cain got stung last night. I thought that I had them far enough apart, but I guess not. Will a Candy Cain Coral Repair itself or is it done for?