Well we can start with no exapansion in the money supply what so ever.
Or all of the programs in place to obsorb money if/when lending begins again. Lending would have to be 5 times stronger than before to significantly outpace the programs in place to counteract inflation. Yes we may, and probably will see inflation, but nothing to the extent of a collapse.
Or we can start talking about how, whether you like to admit it or not, the US is the strongest country during this crisis...and that alone decreases the chances of a collapse.
Or the vested interest of other nations. Countries are so intertwind now it would make no sense for a foreign country to escape the dollar because the damage done would probably hurt the home country just as bad as the U.S.