Does it seem to you a little odd that just a couple of weeks after he is visited by leon panetta, he resigns?
The world is filled with oddities ... the news reports I saw didn't suggest that it was anything more than a brief public encounter at a public audience. Also that Panetta has met Benedict more than once, and that Panetta is alleged to be a "staunch" (whatever that means, these days) Catholic.
If you're suggesting that panetta carried some kind of threat ... maybe, but it must have been quite veiled.