If this were a scene in House of Cards it would go down something like this:
Fed Chair: "Mr. President, my analysts are warning me that market prices are about to fall considerably, tomorrow, if we don't intervene. This small drop tomorrow could be what irreversibly sets the market to fall for the rest of the year."
President: "OK, what can we do to make sure this doesn't happen? It's an election year with Donald Trump doing well and we need Clinton to become the first woman president. We don't want republicans using a market crash as political fodder."
Fed Chair: "We need the government to issue an emergency spending program. Like a small QE."
Fed Chair: "That's perfect. That should buy the FOMC enough time so that at our next 'scheduled' meeting we can sound more dovish by holding off a rate increase even further. We don't want any of this coming off as an emergency, so we'll cover this meeting as one about general economic matters."
President: "Great. Perfect. The only people who will notice are technical analysts like Paul Sproge who also carefully read the news and correlate the two."
Fed Chair: "OK great. We don't like that guy anyway."
The conspiracy is rife with this one, but when your fingers are as close as mine to the pulse, you can notice the difference between what is natural, and what is controlled. If you want truth, follow the money.