While I don't practice in your state, here is my take on your question.
First, although you didn't meniton it, the only reason I can think of as to why he would be arrested in his back yard as you claim is because someone either reported him or he was discovered by a Probation Officer, etc. In either case, he was more than likely ordered by a Judge to refrain from drinking alcohol and therefore, he was arrested because he was drinking. Is that correct?
In either event, he should probably write to the original Judge and ask to be released and see what that Judge does with him. Certainly, the substitute judge was unimipressed with him and I suspect that's why he/she put him in jail.