The person in the best posture to help is the attorney who represented your husband during the preliminary hearing. Ask him/her to describe what happened and what the next step is. If your husband is not satisfied he should consider hiring another attorney who specializes in criminal law. Good luck.
You can search the docket for public information but the specifics of the allegations are in the police report and the discovery; however, it seems he doesn't want you to know details and thus his attorney won't give you any information either. You can go to court as suggested but if you really want to help him make sure he has an experienced criminal defense attorney representing him.
The biggest hurdle for a defendant in a sexula ssault case in PA is that you do not need "corroborating evidence" for a conviction. (This includes DNA or blood samples, medical testimony or eyewitnesses.) This was meant to protect victims since most sex cases happne behind closed doors with no one watching. Simply put, the testimony of the alleged victim alone, if believed by a judge or jury, beyond a reasonble doubt is enough for a conviction. This is why having an experienced criminal...
The Judge has the final say as to permission to move. Have your attorney contact the Court for a hearing as soon as possible. If you do not have an attorney contact one with experience in federal court.
She will more than likely get kicked out of the ARD program and have to fight both cases separately. It is imperative that you hire an experienced criminal defense attorney as both cases could have a severe impact on her future.
The other answer provided is true in that without knowing your stage of the proceeding a full answer is difficult. However, I would not bother bringing witnesses as it seems that you will hear about whether or not you will get into the ARD program. Of course you should consider hiring, or at least consulting with an experienced criminal defense attorney, as there maybe other alternatives. Good luck!