Curt Weldon says (toward the bottom) this isn't the first time Sandy seriously violated secrecy protocols for political reasons, which could be his only possible general motivation in this case.
I JUST WANT TO KNOW
WHY HE DID IT!! Such an extreme thing to do for less than a very important reason. Not quite another Daniel Ellsburg, I'm sure, but my interest is piqued. PIQUED, I TELL YOU!!!