Don't forget that the Sox did screw him over coming out of high school (I can't remember if that was mentioned already). I can't believe he'd hold a grudge ten-plus years and an owner ago, though.
I think he just found the right combination of money and potential for winning with the Yankees.
I'm honestly just glad that it is over.
Although, the storm in Baltimore is just beginning I think; early indications are that the Orioles never increased their original offer of 7/140. Whether or not that was a team decision, or based on information from Boras about their intentions, I have a feeling people are NOT going to be too happy