Has to be clear and obvious without doubt to overturn umpires call,Sorry to pick you out specifically here, Proffessor, but it was a mark.
The ball isn't a score until it completely cross the back of the line.
He clearly (when I say clearly, I mean in a slow motion single frame) had his hands on the ball before it was entirely over the line. (Because we couldn't see the whole ball).
No fumble = mark.
Sorry gang, but as soon as they showed the first replay it was inevitable.
A few thoughts while I'm here, echoing many others...
...Dale was poor. One very soft moment early
With the cameras that are used no one can say either way there was enough evidence to overturn