Who is? But preparing for the worst isn't a bad strategy except for the moral hazard that you don't get bailed out, only the stupid fools who created the bubble in the first place get bailed out.
When someone in the position of Ben Bernanke stupidly says that there is no "market contagion" as late as 2008, when it was obvious for years before that we were headed over the cliff, then you know the government isn't going to stop the lemmings from going off the edge. It is just a matter of how far from the cliff are we? Crashes cannot be timed, no more than the market, but they can be expected when the proper events take place.
Is it a leading indicator, or rather the result of the forces in play anticipating the inevitable. Timing has a lot to do with the success of an Indian Rain Dance.