First, you need a good criminal lawyer to make certain your case gets dismissed. Don't rely upon rumor or hearsay that the judge didn't like how the police officer acted. That's usually not true at all. In fact, its usually the opposite.
If and when the case is dismissed, you will then need a good civil rights attorney to sue the city for false arrest if its warranted.
This really sounds like your word against the officer as to probable cause to make a traffic stop, unless there are other facts, you should concentrate on getting the DUI dismissed.