It’s true that the “catfight” subtext Jay Newton-Small is trying to tease out of George Miller’s decision to endorse Barack Obama seems pretty dubious. That said, it really is true that Rep. Miller is very close to Nancy Pelosi and almost certainly wouldn’t do something like that without Pelosi’s approval.
That said, it seems to me that the correct speculation here is that Pelosi doesn’t want a president who’s so close to Rahm Emanuel. Emanuel is one of Pelosi’s main rivals for power in the House, was a former aide to Bill Clinton, and endorsed Hillary in the primary even though it’s a major breach of political protocol to go against a home state candidate. Pelosi has, in short, perfectly good reasons to want Clinton to lose that have nothing to do with undue fear of ovaries.