i have a nice orange ricordea.it's attached rock fell off the rock wall and was face down in the sand with the rock on top of it for over 12 hours. now over 80% of it is damaged with color lost and has a slim coat covering it, My question is how long should i leave it alone or should I cut the damaged area out. I know cutting it will be ok for the undamaged area,but will it kill the damaged area.Or does the healthy area help the damaged area?