Contrary to what I said earlier, setting my mouse wheel scroll value to '0' in the registry, did not stop the wheel changing my club or putting meter in the game.
It did disable scolling in my browser, Chrome, but not in Windows Explorer, very odd.
I had an inkling that something was beyond my understanding in the way the mouse wheel worked in the game, because when I was working on my little AHK script to disable the wheel, simply reassigning the wheel up and wheel down events to return nothing, didn't change how the wheel worked in the game, whereas it did disable the wheel everywhere else.
In order to stop it working in the game I had to assign a wheel up action to the wheel down event and vice versa to cancel each action out.
I'd be curious to know if anyone has been able to disable the mouse wheel in the game by any other means.