Put it back in and see what happens. make sure they can not do it again, when i was setting up my tank (second hand and only dis-manteled for 5 hrs) i had one jump out of the bowl drop 4ft to the floor, put it back and it was fine
Add a bit of stress coat and melafix. When mine jumped out of the water it did I number on it's fins and eyes. Now about two weeks latter everything is fine and peachy. Just make sure the other fish in the tank aren't picking on him.