Which is not a way to disable AutoConnect with the Quick Shapes menu?
On the File tab, open the Options dialog. In the Advanced group, clear Enable AutoConnect.
On the View tab, in the Visual Aids group, clear the AutoConnect check box.
In the Quick Shapes menu, select a connector or container shape first. This way, no shapes will appear on the Quick Shapes menu.
Open the Document Stencil and move all shapes out of the "Drop Quick Shapes here" area.