Could Bullion Banks Go Bust?

Could Mr. Chavez's repatriation of Venezuela's physical gold take out the worlds bullion banks?
Could the fiat currencies become unwound and exposed for the worthless paper that they are?
All because of a small request of gold to be returned to Venezuela? From the seemingly smallest of acts, the tyranny of fiat could be exposed?!? Could happen. Grant Williams of "Things That Make You Go Hmmm" nicely explains how Venezuela's  request for it's own gold is shaking up bullion markets.