Disney's movie Ice Princess mistake?

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Disney's movie "Ice Princess" mistake?

so I watched the movie over the summer...
here's word for word out of the script

"Now, l'm going to increase
the centripetal force
by tucking in my arms.
This will increase
my moment of inertia,
so l will spin...faster."

so it's been bugging the hell out of me...if she pulled her arms in, wouldn't that decrease her moment of inertia to make her spin faster...to conserve angular momentum?

thanks.
 

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that's depressing then...Disney is going to mess up all those poor kids who actually listened to the physics in the movie
 
I think it was an aesthetic choice, not a mistake, because "increase" sounds more positive and because I could not imagine someone who had heard of moment of inertia getting the concept so exactly wrong.
 
haha that is funny