I love the idea of a Haystack VR world! It's a shame that VR software is in a tenuous state due to the biological factors, but I believe it's the future "one day".
And, for whatever reason, the human exception handler for that problem is firmly linked to the barf() subroutine ;)
I think the barf routine is because when your brain senses your vestibular system not working it thinks "oops I must be poisoned" and tries to make you throw up.