It's great that he had a good shed. He looks awesome in the new skin. You can get the little stuck piece off anytime. I'd thaw a feeder out for him today or tomorrow evening and let it sit on top of his enclosure for a while. See if he starts sniffing and moving towards it. Super heat it to about 100F with a hairdryer and serve it hot. Hopefully he's over his hunger strike and ready to eat. It's just a matter of time.