Since I also won a Wood R4i Gold, I have nothing to gain from a redraw and am impartial.
That being said, I think a redraw is the only fair option. While I don't mean to take away from Rowan's achievement in being able to finish the hunt first and in such a short amount of time, he was operating under the assumption that he could be the first to finish it. People who started the hunt later due to time zone differences or for other reasons would have operated under the assumption that they would definitely not be the first to finish, even though they might have had the ability to finish just as quickly from start to finish as Rowan did if they tried. Likewise, to take away a prize and automatically give it to someone means that the chances of winning that prize are less for each player than indicated.