i know what part you are making reference to because i noticed it right away as well, but surprisingly...in some editions, that is the correct way to play the left hand ovctaves, i have a score that has it written like that, which was also suprising to me...because even though i learned this piece with that score...i never noticed it before
that section only arrives twice in the whole piece...the frist time (in my edition) it is written for left hand octaves
g# a g# f## g# g#
then the second time it is written like most every one recognizes:
g# g# a g# f## g#
so it flip flops: the first time you start with 1 g# and end with 2...and the second time you start with 2 g#'s and end with 1
most people play that section as g# g# a g# f## g#....such as van cliburn and yundi
but in some editions....erez is playing it right, although, he plays it the same both times and doesn't switch to the other way as it's written on the second occasion, so i guess you could say he's playing it half right, even though i've never heard anybody but him play that section like it's written in my score....why there is two different versions i am not sure....but i'll try to dig out that edition and i'll repost it so you can look at it for yourself