S&P 500 rally running into resistance

As suspected S&P 500 trying to get back into the channel it just fell out of. It's a big job to get back in (and it would mean a very strong move). But the market is not tanking as a certain television commentator said would happen immediately. The strength is surprising me. I'm short and adding more but I'm also not certain I won't have to cover at a loss eventually. It's tough to hit the top of a long bull market like this one.