Where do you come up with this stuff?
The Sox spending money last year came as a surprise to no one, after they got rid of a bunch of dead weight from the payroll. They have always stayed under/around the luxury tax threshold. That is their limit. They do not spend like the Yankees, because they do not have as much money as the Yankees, and unless you can prove this with facts, like Forbes' report that the Sox are the third most profitable baseball team, and, surprise, they spend like the third most profitable baseball team.
There is no "secret money", they spend around the luxury tax threshold and that's that.
Also, you keep pounding your chest over the Crawford signing: Newsflash. They were going to sign an Outfielder, and the preferred one was Werth, but after he signed that decidedly ridiculous contract with the Nationals, pulling the trigger on Crawford (who is still overpaid and his platoon issues are still there) suddenly made a whole lot more sense.
That being said, i wouldn't discount them going balls to the wall for Pujols, and not because of their "Secret finances" but because being one of the richest baseball clubs in MLB and having a lot of money coming off the books next year (Cameron, Drew, Ortiz, Papelbon) they could create the fit while operating under their usual parameters.
There is no conspiracy.