Could Sanford affair be a cover for a more sinister rendevous?

It didn't take long for people to begin questioning whether South Carolina Governor Mark Sanford was telling the truth when he told his staff he was going hiking for a few days on the Appalachian trail (including father's day when he didn't even bother to call home.) The obvious question to ask was whether he was having an affair.

If he was using the hiking story as a cover for an affair, and thinking that no one would ask why as a state governor and (at least until this week) likely 2012 Presidential candidate he was completely out of touch for almost a week then the guy is too stupid to be President. Even Eliot Spitzer was smart enough to fit in a trip to Washington at night and be back in the office the next morning (though that still wasn't smart enough.)

Unless of course that the truth is even more sinister than that, and the affair itself is a cover.

Why go all the way to Buenos Aires for an affair? If he wanted to have one he could surely have found someplace closer. But alone and unknown in a foreign capital he could meet foreign agents a lot easier. Governors get regular Homeland Security briefings and other intelligence data and it goes without saying that some of the information is stuff we don't share with a lot of foreign governments or organizations, especially those who may be hostile to the U.S.

Maybe he is smarter than we think, and having an affair would explain perfectly why he would go to Buenos Aires without telling anyone just in case his first cover story got blown, without divulging the real reason. In fact, for that matter, the woman could just be a 'throw in' if someone was wanting to use a state governor and possible President to get something 'done' within the U.S. (better keep an eye on his bank account.)

And even if he was meeting a woman, how do we know she wasn't a Chinese, Iranian or al-Qaeda agent? Possibly even without his knowlege, she may have been pumping him for information even as he was pumping something else.

This question needs to be definitively answered: Who is EVERYBODY he met down there, and who do they work for.