No mention of the phantom run at all in the LA Times report on the game: http://www.latimes.com/sports/baseball/mlb/dodgers/la-sp-0920-dodgers-nationals-20120920,0,4071109.story
The report is all about how wonderful Kemp is and what a great player he is. The full description of the third and forth inning:
The offense came to life in the second game, which would have been pitched by All-Star fireballer Stephen Strasburg had the Nationals not decided to shut him down for the season. Strasburg is in his first full season back from reconstructive elbow surgery.
The Dodgers pounded his replacement, John Lannan, for three runs in the third inning and three more in the fourth.
That's it. I guess it's much more fun to beat the Strasburg-shut-down dead horse story than discuss the phantom run, caused in part because aforementioned Kemp wasn't hustling.