This is an example of front-running an order. In this case, the Fed leaked out what they were about to do to their owners and they immediately got on the phones to their brokers. This is how the bankers have been making money for years, taking it from the folks who play by the rules.
That's why the CFTC doesn't spank the big banks for manipulating the precious metals markets, they have obviously been paid in one way or another to remain dumb and blind to all the fraud. If history is any lesson, people will eventually come for those responsible for all the stealing.