Ides of October
I don't think he actually has the balls to do this but - if congress can't raise the debt ceiling by midnight tomorrow, that would be a perfect opportunity for Obama to hold all of congress in No Confidence, temporarily seize its financial powers for the executive branch (for the duration of the emergency only, of course), and start handing out decrees. It's not quite the Ides of October, but it's close!
I'm extremely curious if neo-reactionaries would view it as a step forward or backward. I assume back, since he'd still be ruling in the name of the mob, rather than as a representative of the noble class.