My husband was arrested on a warrent for a failure to appear on a court date that was supposed to be vacated and the new court date was also vacated.

It is unclear to me why you think the court date was vacated (and why the judge doesn’t). Did you get a piece of paper saying it was vacated? If so, take that to the Court and show it to them. If not, then if you know who told you it was vacated and when and why, tell them that.  I would show up immediately at the court and get the case back ion track to avoid a warrant - or hire a lawyer to straighten it out.