You know, Dreamworks/Paramount/whatever once sold "Transformers" the same way they're selling "Super 8" now: as a Steven Spielberg joint with some other, lesser guy directing. Spielberg's name is added to bring heft, gravitas and (of course) box office to enterprises that aren't yet proven; note that Spielberg's name isn't so prominent in the "Transformers" trailers anymore. The franchise no longer requires him.
That doesn't mean he's not still involved, though, and, according to Michael Bay (who directed "Transformers" movies), the reason Megan Fox was fired from "Transformers 2" was not her big mouth (more on that later), but in fact Spielberg himself.
According to a new Michael Bay oral history in GQ, Bay says Fox was booted by the direct order of Sir Spielbergo (who helped produce the movie).
"She was in a different world, on her BlackBerry. You gotta stay focused. And you know, the Hitler thing. Steven [Spielberg] said, 'Fire her right now.'"

Spielberg lays down the law

"When the snows fall and the white winds blow, the lone wolf dies but the pack survives."
Winter is Coming

Now this is the Law of the Jungle—as old and as true as the sky; And the wolf that shall keep it may prosper, but the wolf that shall break it must die.
As the creeper that girdles the tree-trunk, the Law runneth forward and back; For the strength of the Pack is the Wolf, and the strength of the Wolf is the Pack.