It remained unclear whether Newsweek had got the right man – the enigmatic, anonymous architect of the troubled currency – or committed a credibility-shredding blunder.

A media posse continued seeking Nakamoto on Thursday night after he left the AP office in downtown LA where he and the reporter had sought refuge earlier in the day.

On Friday morning the plot thickened when a post by “Satoshi Nakamoto” appeared on the P2P Foundation’s Ning page saying: “I am not Dorian Nakamoto.” The post appeared in the same discussion thread where a person going by the name Satoshi Nakamoto first published the idea of bitcoin in February 2009 – the TechCrunch blog said the P2P foundation had confirmed the latest message was from a poster with the same email address.

and Henry Blodgett points to this as Newsweek backing off:

The facts as reported point toward Mr. Nakamoto’s role in the founding of Bitcoin. 

http://www.newsweek.com/newsweeks-statement-bitcoin-story-231242