I think something is missing from this story, not sure what. Was he in prison or Jail? They talk about both. Jail usually only house inmates for a year or less, prisons are long term, confusing. For a DWI there is no reason to keep him in long term, unless he is a flight risk. Was he sane when he was put in? The whole story does not quite add up.
If this is a true story good for him, just makes me question some of the facts.