Losing one's footing at the top of the step would pretty much do it.I don't doubt that his death was a tragic accident. What I doubt is how exactly it took place. The stimulation and the figure do not appear to be in scale of the actual height of the 6 year old vs. the railing. The shape of the railing in the stimulation also does not appear to be a good match for the curve in the railing of the actual staircase. To go over the railing at the low place he would have gone sidewise or across and I am not sure how much room that leaves for running prior to the fall.
Shoot maybe he was going to slide down the rail and jumped to grab it and just over shot the bannister because he was running. Does he have a history of sliding down the bannister does anyone know?
What's the deal with the razor? was that a theory or ?? Because if he was riding the razor it would be a no brainer how it happened.