"Uncheck To Hide" Not Working

Rating Widget won’t let me disable the “stars” on certain pages…when I do “Uncheck to hide” and save the changes, the change doesn’t take effect and the box is still selected.

Here’s a demonstration of the problem:

http://screencast.com/t/70TNZMw8

And here’s a link to the page in question:

http://www.startteachingguitar.com/how-to-be-a-guitar-teacher/

http://wordpress.org/extend/plugins/rating-widget/