http://www.miamiherald.com/2011/04/1...l#storylink=fb
I think they're referring to Metro Detroit, not Detroit the city.
Also, this is an interesting nugget:

"One of the main reasons that Detroit’s unemployment rate went down is because its labor pool dropped, too. That is, the number of people either looking for a job or working declined from a year ago— down 2.8 percent. Hiring only went up 1 percent."

Meaning the numbers might be a little off. Still, WTF?