Let me throw my hat into the ring
My memory is that the day Dunstall kicked 17 goals, - it DID include the moment where Manton , in kick off, kicked the ball to himself but fumbled, and Dunstall came in and tackled Manton and got a free kick and Dunstall kicked a goal.
That day I was in the commentary box, with my father and Sam Newman, who were doing around the ground commentary, and I vividly remember 3AW constantly just saying 'interrupt us KB and Sam' if Dunstall has a chance to kick his 18th (which would equal the record).
There was a moment late in the game where Dunstall could have received a handball in the goalsquare, but it wasn't the case.