Wow. I remember this is exactly what happened in 2001 and 2007. Maybe things are different this time.
Just like the bond market is a better indicator of economic growth than the stock market. More money, more professionals, longer memories, not as much optimism.
Edit: future economic growth expectations, rather.
I don't think the US is decoupled at all. It's just the least crappy house in the neighborhood.
See Lou Barnes for some interested commentary on this: http://pmglending.com/loubarnes/credit-news/