The Bernank leaves soon, so he is fantasizing that he will be remembered as a sound money-man. The only straw left to do that after 8 years of financial debauchery is a tapering of money printing. Expect it to be dropped from $85bn to about $75bn per month, but it won't last as Yellen will open the taps with a vengeance next year.
$10bn is, of course, nothing in the great scheme of things, less than the planeload of cash which was left at Baghdad airport for the vultures before now.
I was thinking a similar amount. But the idea that tightening has started might have an exacerbated short-term impact in the markets.