[Plugin: TinyMCE Advanced] Stuck IE Spell Check Button

For some reason, the IE Spell Check button is stuck in the toolbar even though it’s not in the toolbar at all in my settings. I have tried clearing the browser cache. I’m not sure why a button would just get randomly stuck.

Here are supporting screen shots:

Visual Editor toolbar (what shows): http://d.pr/i/ubkv

TinyMCE Advanced settings (what I want to show): http://d.pr/i/A8og

Any ideas? Thank you.

http://wordpress.org/extend/plugins/tinymce-advanced/