San Diego's Gutsy Fake Punt: Was it Smart?

In overtime against the Kansas City second-stringers, San Diego faced a 4th-and-2 from their own 28-yard line. In what would be a clear punt situation to force a sudden death game with the ball in the Chiefs' possession, the Chargers decided to fake the kick, sending Eric Weddle two yards for a first down. Though the play ended up working, was it the smart move for the playoff-bound Chargers?