Z.B.
This is very, very normal. Dr. Sears on "The Doctors" talked about how many kids at this age need to be "parented" to sleep.
I would do what he wants. I really would. Sit with him, and help him to feel safe. For at least a few nights, sit with him until he falls asleep. Once he feels safe you can begin making up excuses to leave with the promise to come back (laundry, dishes, bathroom, make a phone call, whatever). Always come back! Do this for a few nights, gradually lengthening the time you are gone. It won't be long before he'll be asleep when you get back.
It's really important that he feel safe. If you do this for him, he will feel safe, and this should no longer be a problem. I completely agree with Pam. I will ever regret doing this for both of my kids when they went through this phase.