I don't think it will heal on it's own. If it were a very small hole very high on the crop, maybe. From your description it doesn't sound like it was small or high. I would pinch or use tweezers to lift the skin gently when opening it back up. Since everything is so small and thin, that way you don't cut into anything else. If you don't have a scalpel then a tiny pair of embroidery scissors would work (boil them for 20 minutes). Two (or even 3) pairs of hands would probably make this easier. If you see food as soon as the skin is opened, you'll know. Best of luck!