Denninger is an unemployed crackpot - go to his youtube posts for evidence of this.. His argument is full of holes and incorrect definitions. Amateur wannabe economist who basically is BSing stuff he doesn't understand...
Mainly that M * V = GDP is the correct equation. V is derived as a function of GDP versus money supply, after the fact. Look at the 'St Louis Monetary Base' for an explanation of why V is collapsing. If the recent increases monetary base were distributed directly to the citizenry versus the banks , I think GDP would amp up more directly, thus the V would not be falling so quickly.
V is a function of economic activity, and this 'M1 multiplier' is the wrong variable to be looking at. It is merely a function of monetary base vs M1. It is not the broad 'money multiplier' concept he is actually alluding to, or the concept of $$ ratio of GDP improvement returned by deficit spending...
Formal definition from St Louis Fed of this chart:
http://alfred.stlouisfed.org/series?seid=MULT
The M1 multiplier is the ratio of M1 to the St. Louis Adjusted Monetary Base. For further information on monetary aggregates, please refer to the Definitions, Notes, and Sources at
http://research.stlouisfed.org/publications/mt/.
I could barely get through his tirade. It reads a la Jack Hershey ... This guy has been outside direct human interaction for quite too long.