Jake is definitely still in the band. Sucks about Scottie though. Derr and Cory will have to pull their weight on guitars. Speaking of Cory on guitars, I'm glad he decided to write instrumentally with the band ever since The Anti-Mother.
I didn't see him in the video. He wasn't on their last (couple?) of tours either. Since I didn't see or hear about him being in the studio with them, I just guessed that he wasn't in the band anymore. I'm not sure why Scottie isn't playing with them anymore, but now that he and Chris Raines are both NOT in NJ anymore, Spitfire should totally re-form.