"Trade what you see, not what you think."
That is what I used to tell our guys and it's what you should be telling yourself everyday (premkt, mkt hrs and AH). Trading is about sentiment, not reality. Fundamentally the world is staring into the abyss. Fundamentally the US credit market was staring into the abyss since '06, but look how long that took before the move finally came.
Anyone shorting into these bleed ups with expectations for the eventual -5% ES move is going to margin call themselves into oblivion. Go short, fine, but you had better make sure it is near defined resistance levels with a crystal clear exit plan.
A big part of this game is being able to see through the b.s. and recognizing reality from government-fed figures / headlines. An even bigger portion of the game is DISCIPLINE, which includes not throwing money away on sooth saying predictions. The 'crash' will happen when it happens.