
Continuity mistake: Near the middle when Sy is imagining he is in the Yorkin's home, he is sitting on the couch watching a ballgame. Behind the couch is a tall white square sculpture. Sy turns to the dog and says, "Good game." When the camera goes back to Sy, look behind the couch, the sculpture has disappeared. But when you see the Yorkins come in the door, and the camera goes back to Sy on the couch, the sculpture has reappeared. (00:30:15)
Chosen answer: This is mentioned on the DVD commentary - it's deilberately open ended so one can interpret it as either it's Sy imagining what he wants to happen OR it's what really happened.
Neil Jones
As Neil Jones said, the ending is open for interpretation. However, I think there is reason to believe that Sy imagined the photo. It shows him and the family outside of their house, all looking happy together. Would they want to take such a photo with Sy after the incident at the hotel? And before the incident, they were probably not close enough with Sy that he would be in a photo taken at their home. Him and no other guests/visitors.