He's definitely involved. At the CLT pilots' meeting in September, Doogie said he had just come from PHL where he met with Rendell and Street over the "PHL Gate Affair." He mentioned that Rendell was supportive, and Street was "not so." That's my own characterization of what he said; if you have access, you can see it on the Hub.
Of course, this was all before the PIT pulldown, so Rendell may very well have changed his opinions in the matter.
I would guess that he's changed his opinions. I'm sure he is eyeing one of the Senate seats, and Spector isn't getting any younger.