That was not an offload. An offload is passing to a teammate. That was just throwing the ball away so the other team has a shot at it.Keppie = 1 try assist for Canterbury, an offload guaranteed to lead to a try.
Same as Harper's later in the match. Strange behaviour, especially in wet weather. And in Keppie's case, especially in the first 20 seconds of the game a few metres from your own line!