Darn, I don't want to do this to my fellow practitioners but ookkkk..call him and tell him to bide by your agreement under lawyer and client relationship and if not, you are going to take legal steps to "disbar" him. (this can cause his license but thats too rude so i hope you won't really file a disbarment case against him)
If the allegations are true, and mothers can be very good at manipulating a child to say anything, than he can't get custody under the federal V.A.W.A. Even if she attacked him and all he did was grab her arms to protect himself, he can get custody.
There was a Michigan case in 1994 that was in national headlines because the teenage boy won custody from a mother who would be spending all day in college classes, leaving the child in day care for 12+ hours. After he won, she claimed he had battered her the previous year, so he was arrested and put on trial.
At the trial, two females friends were to confirm what she had claimed, but after hearing the penalties for lying under oath, they quickly changed their stories and said that she had attacked him. The only thing he did was grab her arms to protect himself. He was found not guilty and given the child, but.......
The female prosecutor and the Presidnet of the Michigan Chapter of N.O.W. announced to the media that this was clearly an example of the courts battering woman after the men do, because grabbing her arms was still domestic violence on his part. They filed an injunction against the custody award and appealed it to the state supreme court, where it was overturned on the grounds that if a man touches a woman, even in defense, it is still consider DV under the V.A.W.A. and as such, he could not have custody or visitation rights.
Five years later, the child was dead from abuse by the mother.