I am guessing the author pulled a Broder/Tesla situation on this story. Gist may be true, but the details were fuzzed for a better story/self aggrandizement. I particularly don't buy the whole "You were the only nice person to these poor 'deaf' children all day" angle. I have worked fairly often with people in the deaf and blind communities and if anything they complain that people treat them too kindly in general and not as a normal person.

As for a reason why the author would lie, a quick persual of his site makes it pretty clear he is trying to kickstart his career in the Apple blogger niche. Story like this may be a good way to get it started.