I to have found this problem on more than one occasion but I have been told by fellow players that it has to do with the fact that you have consistently hit the green and therefore get extra points which to my mind is rubbish.
You could have the scenario where a player hits the green for 9 holes but in each case they are not closest to the hole, the way the system is working by hole 9 they will have won the game because they are getting most points which rather makes a mockery of the game as being closest to the hole.