Tim Duy notes that the shifts in relative global demand that would lead to a 'rebalancing' of current account deficits and surpluses seem to be on hold.  With the crisis in Europe leading to a decline in the euro, which, in turn appears to have given China cold feet about letting the yuan rise, it looks like we may be back to the 
status quo ante where the US is the world's "consumer of last resort".  He concludes: 
Where does this all leave us? The rest of the world is intent on  pursuing a  begger thy neighbor strategy, with the US being the neighbor. I suspect  US  policymakers will eventually relent; it will be the only choice left.  All we can  do now is sit back and wait for the inevitable explosion in the US trade   deficit, waiting idly by for the next crisis and the "chance" to bring  some  sanity to the global financial architecture.  
Michael Pettis believes that the European crisis makes the yuan revaluation more urgent, but he is not optimistic that the powers-that-be see it that way.  He worries the end result will be trade tension and protectionism: 
Most policymakers around the world –  while publicly excoriating the US for its spendthrift habits – are  intentionally or unintentionally putting into place polices that require  even greater US trade deficits. This cannot be expected to happen  without a great deal of anger and resistance in the US.  The idea that  suffering countries should regain growth by exporting more to the world,  and that rapidly growing surplus countries should not absorb much of  this burden, will only force the US into even greater deficits as US  unemployment rises to reduce unemployment pressure in Europe, China,  Japan and elsewhere.
 I would be surprised if the US  accepted this with equanimity.  On the contrary, I expect it will only  exacerbate trade tensions and ensure that next year the dispute will  become nastier than ever.  
Of course, real exchange rates can adjust due to price changes as well as exchange rate movements.  Some of the recent wage gains by Chinese workers give some reason for optimism.  In a story about rising prices of Chinese exports, the Times' David Barboza writes: 
Last week the Japanese automaker Honda  said it had agreed to give about 1,900 workers at one of its plants in  southern China raises of 24 to 32 percent, in hopes of ending a two-week  strike, according to people briefed on the agreement. The new monthly  average would be about $300, not counting overtime.  
 And last Thursday, Beijing announced that it would raise the city’s  minimum monthly wage by 20 percent, to 960 renminbi, or about $140. Many  other cities are expected to follow suit.  
 Analysts say the changes result from the growing clout of workers in  China’s economy, and are also a response to the soaring food and housing  prices that have eroded the spending power of workers from rural  provinces. These workers, without factoring in the recent wage increases  by some employers,  typically earn $200 a month, working six or seven  days a week.  
 But there are other reasons. Analysts say Beijing is supporting wage  increases as a way to stimulate domestic consumption and make the  country less dependent on low-priced exports. The government hopes the  move will force some export-oriented companies to invest in more  innovative or higher-value goods. 
Also, other emerging market countries are providing another engine of demand.  At project syndicate, Mohammed El-Arian and Michael Spence write: 
Over the past two years, industrial countries have experienced bouts  of severe financial instability. Currently, they are wrestling with  widening sovereign-debt problems and high unemployment. Yet emerging  economies, once considered much more vulnerable, have been remarkably  resilient. With growth returning to pre-2008 breakout levels, the  performance of China, India, and Brazil is an important engine of  expansion for today’s global economy.  
High growth and financial stability in emerging economies are helping  to facilitate the massive adjustment facing industrial countries. But  that growth has significant longer-term implications. If the current  pattern is sustained, the global economy will be permanently  transformed. Specifically, not much more than a decade is needed for the  share of global GDP generated by developing economies to pass the 50%  mark when measured in market prices. 
(see also Mark Thoma's comments).