You can move all the icons back into their normal places and turn the two bars back on if you want.
But there's no method of leaving them where they are before the add-on initializes. Because in order to make it so you can drag them all over the screen I have to destroy the placement of the ActionBar add-on. IE, it sits very snug in a largex46 rectangle for the bottom bars and a 46xlarge rectangle for the side bars. Which would limit screen movement to just that tiny space.
So instead the ActionBar add-on's Main Form is expanded to encompass the entire screen, which then breaks the placement of the buttons; without their reformatted and controlled placement where they are, they would be in the center of the screen like a cross.
My recommendation is just go through the initial hassle of replacing them by hand, shouldn't take you very long and they'll never need to be moved again.