my opinion is w/ it as written based purely on a textural and harmonic analysis of the measure.
1. three note figure before includes RH B nat and f nat,
2. the figure you question doubles this.
3. the figure right after includes the two of same notes, b nat and f nat
4. making the change for e sharp doesn't make harmonic sence, a raising that e to e sharp would imply a leading tone to f sharp. the measure instead has f nat, doesn't make any sense.
5. putting e sharp in that spot would also create a strange 'stutter' with a 'repeated note, it would not only be super awkward, but would also neccessiate switching fingers, and the figures already falls into the hand, creating a repeat in there would be odd.
6. harmonic analysis would fall apart w e sharp, you'd create a weird e sharp minor on an altered 7th (the 7th would normally be d sharp (ie min 7th) but creating a natural in base essentially 'double flats' the 7th and you haven't built a diminished interval on the basic triad yet. wouldn't be unheard on in a 20th century/jazz idiom but i don't see it fitting in this context at all.
just my thoughts. i could be way off because
