Perhaps Quasi's foreknowledge worked against her. There have been other reports of people who haven't heard about M:S and its effects, who have raved about this ride.
People seem to be so caught up with the word "spinning" - forget that word! As Quasi said, you don't feel it.
Since she knew it was a centrifuge, perhaps she was preparing for it, possibly even waiting to feel sick. - No offense intended.
I think if you like this ride concept you need to go in with no preconcieved notions or you will make yourself sick no matter what. Of course no one wants to spew in a ride, but do you think WDW would have spent all this time and money on this ride to have no one ride it?
I appreciate first hand reports as much as the next person, but when everyone jumps on the "spinning" word when you don't realize it it's a little irksome. Especially when you decide to give up on the ride after ONE person's report.