Thank you for your post.
"Revert Record" is a menu command. Therefore, you would need FileMaker Pro 10 Advanced to assign that particular account to a Custom menu set that includes the menu item "Revert Record".
If you don't want to do a custom menu, you could write a one line "revert record" script and set it to run with full access privileges. You could then put a button with this script for any layout where you need this feature.
I like this better. No need for FileMaker Pro Advanced. Good call!