I read all the descriptions of the spinning motion here and other boards... and let me offer my opinion that it is NOT the spinning motion that got to me... the increased gravity and "weightlessness" were actually really well done. What got me all disoriented was the zooming amongst the canyons toward the end of the ride, which felt like a much more intense "traditional" simulator like Star Tours or Body Wars. At no time could I detect I was spinning (other than the fact I knew I would be by reading spoilers of the ride and being able to actually SEE the centrifuge while stepping into the capsule).
-- M