The BRICS are already trading amongst themselves and bypassing the dollar. China has the largest storehold of Gold in the world, and regardless of what the IMF says China will play its on own game.
Whenever any country openly announces they are going to a Gold backed or other tangible asset currency, it will pull the plug on the dollar. The BRICS are already aligned with their own completely independent financial system, and they will announce they too are going Gold backed. According to Dr Jim Willie the dollar will probably split into a 2 tiered system, with a domestic dollar decreasing in value as much as 80%, so say goodbye to your life's saving if you have an IRA, 401K, Stocks, Bond, or other fiat backed counter-party risked asset!