Not sure on this specific case, and IANAL, but from reading the article it sounds as if he has been found in contempt of court. When a judge rules an individual in contempt they can sentence them to an unspecified amount of time as to make them comply. In this case, although he hasn't been charged with the "headline grabbing" crime, he is charged with contempt which has no minimum/maximum sentence and is completely up to the judge's discretion.