If it goes to Court and the information in the police reports is relevant to the case and would bring clarity to the issues, you can seek leave to subpoena them. If an ICL is appointed and thinks the information in the police reports would be useful they will likely seek to subpoena it, saving you the hastle.
There can be a lot of ridiculous nastiness between separated parents. Is your house unsafe? If not, just think of these kinds of slurs as his issue not yours.