Contact your lawyer. Here in Minnesota, as a daycare provider, we can NOT deny a parent acessto their child, unless a court order barring such activity is in place, and it needs to be specific (such as saying the parents can not come to daycare, or visit at daycare or be within so many feet of daycare, etc).
As far as giving him to info to begin with, as I said, ask your lawyer, especially since things are in the works and proceeding at this point. They will know best what he is entitled to at this point. But as I said, here in MN, we, as providers are not able to deny any parent access to their child unless their is a specific court order in place. I have had them before and had to call the police before. Very tough position to be in for all concerned.
Make sure you are proceeding with the correct advice that won't come back to "haunt" you or cause other problems in the process you are going thru.
Good luck!