They screwed up shelling big money (6.3 million) out on that guy
They've shelled out more than $6.3.
You first have to add the $2 million dollar signing bonus to the $6.3 2007 salary, he's then owed $8 million the next two years, and $10 million his final two. Unless they can get out of his contract at some point of course (no-trade clause).
Oh, and then theres the $51.1 million they owe the Seibu Lions as a transfer fee.
With more and more tapes being released on him and seeing more teams, he's going to have to adjust something or this could be one of the most expensive mistake of alltime.