When Oscar asks what happened to Dwight, Creed says "You didn't hear? Decapitated, whole big thing. We had a funeral for a bird." Creed obviously got Dwight mixed up with Ed Truck, but Jim says "I'm pretty sure none of that's real." Jim was working at the Stamford branch when Ed Truck died, and still doesn't know that any of that happened.
When Oscar pulls in to the parking lot, Michael makes a big deal about how nice his car is and how good German engineering is. The car Oscar drives is a Lexus (which is NOT German), which appears to be a joke about Michael's character (though Oscar ignores the comment).
Andy says he will complete anger management sooner with "name repetition, personality mirroring and positive reinforcement". This is similar to what he said when he began at the Scranton branch and wanted in with Michael, saying that he'd use "name repetition, personality mirroring and by never breaking off a handshake".