I think the bears have an upper hand for the next few days. Here is why:
1) yesterday's drop in SPY (-2.4%) was met with extreme VIX jump +30%. the natural interpretation/expectation: excessive fear that will lead to a noticeable short-term bounce.
2) today brings no surprise from the Fed: the market is flat AFTER the news. all we got is +0.8% bounce from yesterday.
basically, i expected a bigger bounce given 1)+2). the bulls clearly demonstrated their weakness today. tomorrow may be critical.