I think I've made a pretty strong argument against that speculation. So let me restate it.
1. First off, we have a guy who looks an awful lot like Clark in this chaotic crowd scene in front of the Daily Planet building. You can see Perry and Jenny (see purple sweater) in the middle of the photograph wearing the same clothes they are wearing during the film's climax when they run out of the Daily Planet building (UK TV Spot) and when they are running down the street with buildings collapsing behind them (Trailer 2).
However, most importantly, right above the taxi cab, you can see a man with black hair in a grey vest and trousers with his sleeves rolled up who seems to be the focus of the scene. The film's camera man is standing right to his right apparently pointing the camera at the black haired individual in close-up. Given that the man is wearing an outfit that is pretty synonymous with Daily Planet Mild-Mannered Clark and that he has his hands on his hips in iconic Superman pose, I think there is a damn good chance he is Mild Mannered Clark about to swing into action as Superman. If so, Mild Mannered Clark then appears in the film prior to the closing scenes/epilogue.
2. Second, the fabled Clark walks into the Daily Planet lobby and puts on the glasses shot from the Comic-Con Trailer that everyone thinks will be one of the last scenes of the movie talks place in the same lobby that everyone else is running out of in the UK TV Spot. Given the explosion that are going on around Perry and Jenny as they run out of the lobby, the fact that they are seen running away from buildings collapsing behind them, and we have set photos showing construction fencing with billboards for the Daily Planet Reconstruction Fund, it seems pretty clear that the Daily Planet Building bites the dust during the film's climax. Therefore, Clark walking into the lobby putting on the glasses CANNOT be one of the film's final scenes because the location of that scene doesn't exist at the end of the film.
Thus, the evidence we have seem to clearly indicate that Daily Planet Clark will appear prior to the film's final minutes.