Are you dropping the cage temperature at night? If so I would stop, it's unnecessary unless breeding.
What is the cage humidity? During shed the cage should be between 60%-80% relative humidity.
At this point I wouldn't be too worried. Over the next few days to a week your snake should complete the shedding process. If your snake is still acting strange after he sheds then I would start to be worried. A trip to the vet might become necessary, but for now I think you just need to keep a close eye on him for any more symptoms.