Religion in the Chalk Circle

Ok, so there have been some questions about the portrayal of religion in Chalk Circle, so here's my take on it:

I don't think Brecht is criticising faith or God, any more than he's criticising justice and fairness. What he's criticising are the institutions that do un-godly things in the name of religion, or unjust things in the name of the law. He's pointing out, throughout the whole play, that we should care about the SPIRIT of the law rather than the LETTER of the law, the SOUL of a church rather than the WORDS alone.
The Governor's Wife is, in the letter of the law, Michael's mother, but she's an unmotherly creature, and the child deserves to be Grusha because she has the spirit of motherliness, even though she has not blood or legal tie to the child. Similarly, Azdak technically breaks the law, accepting bribes, ignoring evidence, etc, but he does this because the institution of the legal system has grown unfair, and it's only by breaking the law that fairness can be reached. Just so with religion. Far from blaspheming, Brecht suggests that real godliness and "Christian" behavior does exist and should be treasured (like Grusha's saving the child in the face of personal danger), but we must be wary of those people (like the drunken monk and "religious" Aniko) who use religion as an excuse for very un-Christian behavior, just as other characters use the law as an excuse for unjust behavior.
That's my reading, what does everyone else think?

Ian