Eh... this is like that Gallup poll that had McCain up 10%. Its still too early to look at likely voters.
This will be hurtful to McCain during this news cycle. My Republican friends should hold it together though. This race isn't over yet.
The poll is certainly off.
However, Obama actually gains a point (or, rather, McCain loses one) in the poll's sample of registered voters without the likelihood-to-vote filter. Certainly that filter can skew things in favor of a candidate, but it doesn't appear to have here.