Is it bad for a cat to spin?

There's fluid in the cat's ear, when you spin the cat, it goes, left to right, left to right, left to right, it's brain doesn't know what is going on.  It gets dizzy.

Images from:
http://www.tchain.com/otoneurology/images/master-ear.jpg
http://www.tchain.com/otoneurology/images/round%20window%20rupture%20cd.jpg