Warning! 24 Semi-Spoiler

If you haven't watched yet this week, you may want to skip this. I'll try not to give too much away, but I want to offer a theory or two on what's going on......
My general reaction to this weeks' episode? Holy Crap.

The whole Wayne Palmer coming back and helping with the operation? Amazing.

The last scene, when we see who's ultimately behind all of this? Are you serious? Logan? The spineless wonder of a President?

I was discussing this whole thing with Drew last night (you know, since we're moderately obsessed), and we couldn't come up with a good reason for why the President, of all people, would be behind all of this, or how he orchestrated it without anyone finding out. So I started kicking around some theories/premises, whatever you want to call them.

So here's my personal/general theory on the whole thing. Mind you, there's some holes in it that I imagine may or may not be filled in by the writers in the next 2-3 weeks.

Here's my thoughts. First off, I think it started with the plot centered around the Centax gas. Logan is a guy who's supremely worried about public opinion, and how things look to the American people, and how history is going to remember him. Remember, he's not an elected President. He took over after President Keeler was shot down in Air Force One during season 4. He knew there was a prevailing feeling (though not publicly, but within his own administration) that David Palmer held a great deal of the responsibility for getting the country through the last crisis. By manufacturing a crisis, and then dealing with it effectively, he shows his own strength and ability in dealing with a situation such as this. That, or he's fallen into this whole "I'm a patriot" thing that Cummings and Henderson have both been spewing.
How do the other players fit into this though? Well, as we saw last season, Cummings was more than willing to do the Presidents dirty work, as in ordering Jack's murder. I believe now that he committed suicide b/c he knew all along that the President was the man behind this, and killed himself to prevent ever having to give up that information. It was a risk he assumed when he involved himself in this plot.
What about Jack? Well, I have a feeling that we're going to find out down the line that Logan had managed to find out that Jack was still alive. That's very plausible. Once he found this out, the rest became easy. Framing him for Palmer's murder makes everything else a piece of cake. One, it elimiates Palmer, who was about to expose the plot. Two, it eliminates Jack in one way or another. Either he's going to be killed, or imprisioned as a traitor. That alone would eliminate any heat that may have been felt by the Chinese, should they ever find out Jack was still alive. Killing of Jack's friends, well that was just to help draw Jack out of hiding, to aid in the killing or capture for Palmers assasination.

So it's a loose theory, but it makes sense.