That's wrong in every conceivable sense. I can't even...
Sure he may be in the wrong for the scuffle (guess the judge is in a better position to know, we hope). Is it even legal in the US (or anywhere else) to compel anyone to attend a religious service? Seems to me the most he could do in that line would be to say: 'a nice show of contrition might be to go to a few of this preacher's meetings - but pay this fine' (or whatever).
Even leaving aside the implicit apostasy of the Catholic man (we can't assume that 12 weeks later he will be an out-and-out Baptist, after all - and I imagine particularly in the eyes of the N.O., submitting to this kind of secular imposition would be something to be tolerated?) - it would be just as wrong (legally anyway) surely if the judgement had gone the other way and the protestant had to go to Mass for 3 months. (Not that that would be a punishment, but you get my drift). I despair.