I don't see why you need to reverse all three.
You can still access all the scripts from the script menu by opening the script manager. The same is true for the layout manager and if you enter layout mode you can also see all layouts in the layout menu.
A script to unlock and reveal the toolbar is all you need to add and run before you start more development work.
True, but its quicker from the drop down list on the toolbar, than having to go Manage, layouts etc.......
Yet you can use that drop down quite easily to access all your layouts as long as you first enter layout mode.