CA Attorney General Jerry Brown now fighting against Prop. 8

So Jerry Brown filed a legal brief saying that Prop. 8 is unconstitutional. (see article here) Frankly, I am not surprised in the slightest. He has been openly vocal about his personal feelings about Prop. 8 from the beginning. He voted against it. So where is the shock in this? Well, because the state Attorney General's job description is to legally defend the voice of the people.
"Brown's decision to challenge the voter-approved measure and the argument advanced by the attorney general was totally unprecedented. His legal duty as attorney general of the state is to defend initiatives passed by the voters." Seems to me that Jerry Brown isn't doing his job. And he has been making noises about running for CA state Governor (again)? Good luck with that one!