Saw it in the theater last fall. Enjoyed it immensely, as did LTB, and will second your recommendation w/o as much as a drop of reservation and/or hesitation.
The thing is, the whole Sabremetrics thing is no longer a secret, and the big money teams have figured it out just like the little money teams. So the moral of the story might be that it pays to be smart, but it pays even more to be smart and rich.
Which I guess means that if you are smart, don't dick around when it comes time to do something with it.
So much for idealism, eh?