What has changed a little bit is the relative support for the two democrats by region:
NOTE: THIS IS THE CHANGE IN OBAMA's SUPPORT IN EACH REGION, NOT THE LEVEL OF SUPPORT ITSELF.
That's an (ugly) map of the seven regions of Pennsylvania as defined by Quinnipiac. Obama gained 12 points in Philadelphia, and 13 points in Allegheny county, which includes Pittsburgh. He also gained 8 points in the Northwest region (Erie is the largest city there) and 9 points in the Northeast (Scranton), both of which include plenty of white, working-class folks. On the other hand, he lost 9 points in the Philadelphia suburbs (Bucks County, et. al.) and 11 points in the Southeast portion of the state, which includes both some Pittsburgh satellite suburbs and some rural regions. He also lost 5 points in the central portion of the state.
That's not much on which to stake a claim on there that 'bittergate' is hurting Obama among working class Pennsylvanians; if anything the trendlines are slightly favorable for him in industrial towns like Erie and Scranton. It may be hurting him in the 'burbs, however, while helping in the cities.
Also interesting: Clinton leads by just two points (49-47) among voters who are choosing their candidate on "shares values"; that's actually down from last week, when she led that category by a 51-42 margin. Obama did lose ground on "trust", however. It may be that bittergate ultimately goes to making Obama look political (telling Pennsylvania voters one thing and San Franciscans another), but not so much "out of touch".
EDIT: SurveyUSA also has a new poll out, which shows Clinton ahead of Obama by 14. That's actually an improvement for Obama from the previous SurveyUSA survey, which showed Obama trailing by 18; however I would not really point to a favorable trendline since the 18-pointer looked like an outlier. The SurveyUSA poll also has somewhat different regional and demographic findings:
However, the contest remains tight in Southeast Pennsylvania, which includes Philadelphia.
The poll also found that Obama gained ground among Democrats who attend religious services regularly.
In the Pittsburgh and Johnstown areas, Clinton gained ground, while Obama picked up support in the Harrisburg area.
EDIT #2: SurveyUSA also conducted a separate poll of Harrisburg, PA voters. A 51-41 majority of Democrats, as well as a majority of independents, said they agreed with Obama's bitter comments; on the other hand, a 62-32 majority of Republicans disagreed. By a small majority, however, Republicans said were not offended by Obama's comments; that was also the case for a 2:1 majority of Democrats.
EDIT #3: Finally, Rasmussen has a new poll out, showing Hillary with a 9 point lead over Obama in Pennsylvania -- that's a slight improvement from her 5-point margin last week. Meanwhile, however, Obama has opened up a 9 point lead in their national tracking poll.
If we look at all Democratic primary polls that surveyed both pre- and post- the controversy, we get the following:
Agency Area Obama Trend
ARG PA -20
SurveyUSA IN -7
Rasmussen PA -4
PPP NC -1
Quinnipiac* PA 0
Gallup Nat'l +1
SUSA PA +4
Rasmussen Nat'l +6
AVERAGE, with ARG -2.6
AVERAGE, sans ARG -0.1
* Includes some pre-bittergate interviewing.