Dempsey might have been half a step offsides when the ball was played. His feet look to be onside, but his head is clearly off, and his shoulder might be off. However, it's very hard to see. I might still have the game in non-HD; I can look tonight. Moreover, because of the flight of the ball, Dempsey gained no advantage by being offsides. By the time he actually played it, he was in an onside position -- not that that matters, of course. Because of the way the play developed, the call is magnified, but I think Dempsey was probably offsides, though it's a really, really, really questionable call. On a play that close, if you're going to call that offsides, you really need to do straight away. Not once the ball is in the net. Dempsey's individual effort made the play, and if he hadn't scored, the ref wouldn't have called it offsides. Which to me means that it shouldn't have been called at all.