I activated it and examined a page. I don't see anything anywhere in the admin area for the page that lets you turn it off for the page. Where should it be?
The alternative plugin Disable Visual Editor WYSYWIG seems to work decent, but if you had the Visual tab on when you last edited a post and you try to edit a post that uses the disable feature, the Visual tab will still load initially and break the code. Its ok as long as you don't hit Update. You'll have to change tabs and reload the page. But if the user doesn't catch the glitch and hits Update, the code will be mangled.