You can just press [Esc] on the keyboard when you're done to go back to normal browsing. It's explained in the add-on description but i guess i must make it more obvious.
I'll try to add it to the menu in the next update

[edit] This is now supported in ver 2.1, if you click on the same menu again the mode is turned off (as if you pressed on [Esc]) and everything is back to normal.