Find out if your health plan permits family counseling or psychological therapy. If so, put your son in (he probably could use some anyhow) and then get the counselor’s report admitted into court.
As for the police case, the social worker sounds like an idiot. This is not a professional opinion but I can’t see how a judge would be biased against you for filing a police report after being punched in the face.
Finally, if your previous custody order contained a mandate for your ex to receive counseling, go to court and ask the judge to order her to comply with the previously entered order of the court.
Oh, if your attorney fails to return your calls, ask his secretary if he can spell g*r*i*e*v*a*n*c*e. Attorneys have an ethical duty to return their client’s calls. In certain states, Connecticut being one, they can be publicly reprimanded for failing to do so.