Hello Mike,
Currently, you can hide only the bottom buttons (Keyboard..., Menu Option... and Palette...).
You can do that by setting the following properties:
nCommandBarsManager1.EditorConfig.HasKeyboardButton = false;
nCommandBarsManager1.EditorConfig.HasMenuOptionsButton = false;
nCommandBarsManager1.EditorConfig.HasPaletteButton = false;
Considering your question we've decided to add an ability to hide the tabs from the Command Bars Manager Editor by adding 3 additional bool properties to the NCommandBarsManager.EditorConfig.
You will be able to find this feature in the next service pack, which should be released very soon.
Best Regards,
Nevron Support Team