Let's start with the comb. Yes, it can be saved. Pick a cooler day where high temps won't make the newly drawn comb very "rubbery". Gently take the cover off by pulling straight up. Place the cover over two empty boxes turned on their ends or a couple of saw horsed...something like that so that you can get to the comb out in the open. Take an EMPTY frame (I use wood but if you use plastic you can cut the middle out of the frame leaving a nice big hole to work with). Hold the frame up to the comb that the bees built and estimate what will fit. Brush off or smoke out the bees as best you can from the comb and then cut it out and off of the cover. Install it with rubber bands or wire onto the empty frame you have which then gets installed back into the hive. While you're fitting it in the frame, don't use the top of an outer cover from an adjoining hive if it's been sitting in the sun. You can imagine how I know about this....!
As far as the cranky bees, check to make sure they are not queenless. That said, I've often had real mean bees for a few days after moving them from a nuc into a hive. Not sure why. They usually (but not always) settle down after a bit.
Finally, if they are real mean, just leave them alone. Forget about the comb. This time of year (not sure where you are though....you should add your location to your profile), a strong nuc can quickly fill stores and produce brood so if you have to give up on that comb don't sweat it much.
As far as the cranky bees, check to make sure they are not queenless. That said, I've often had real mean bees for a few days after moving them from a nuc into a hive. Not sure why. They usually (but not always) settle down after a bit.
Finally, if they are real mean, just leave them alone. Forget about the comb. This time of year (not sure where you are though....you should add your location to your profile), a strong nuc can quickly fill stores and produce brood so if you have to give up on that comb don't sweat it much.
