Kiell breaks his sand stream
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Before the task begins, Kiell removes his shoes to avoid getting sand in them. For some reason, he also decides to move his bottle to the ground, while pouring. During this proces - and just 3 seconds into the task - there is a break in his sand stream. He is the third contestant to pour all of the sand out of their bottle, but is disqualified.
(Written by Karl Craven)