First, as you said, try and take as many off as you can to make frags. Then use a brush (metal is better, and scape away babby) - skimmer will go crazy, will want to keep GAC going and change after a few days, unless you do a good size water change. Afterwards, what seems to have survived, cover them up with epoxy. I've done that a few times. Although giving them away on this forum will frustrate you, (pink zoa's or brown/green button polyps) as no one will take them for free..... you could sell them cheap or give them away on craig's list though.