You can put it outside and let them clean it up. Don't put it too close to the hives or else other bees will discover your colonies and THAT will cause fighting. You could put a spacer on your hive and lay the comb on the top of the inner cover. The bees will clean it up pretty good. You could also just crush the last of the honey out for yourself and then replace the foundation. If you have a frame in the hive that's not been pulled, you could swap it with the messy one. They'll clean it up inside without too much problem although I've had times when they went wonky building new comb on a damaged frame. You could freeze it and give it to them if they need food later, assuming that there's some honey in the dangling comb.
"My wife always wanted girls. Just not thousands and thousands of them......"