Last time I was there I heard a Dad that was not so happy that his 3 year old couldn't ride Cat in the Hat or the Trolley in Sky. Cant really blame him since the area is supposed to be a kids area. Plenty of thrill rides at IOA, I think they should stop the spinning all together and get rid of the height restriction.
On another note, in the area that says CRASH and starts to spin, there was a cell phone on the ground that was ringing. Kinda funny seeing it especially since the same thing happened to me a few years back, which my oldest quickly reminded me of.