Weird thing is it used to be there in an early beta and users complained about it being there and so it was taken out. Since the code was changed so it won't show up there any longer, I think you will have to manually add it into your navbar template. Basically write a condition that says "if not on content page (that is the cms page), then show this....." and put the link there. I think that would be :
HTML Code:
<vb:if condition="THIS_SCRIPT != 'vbcms'">
link here
</vb:if>
(Or use whatever condition you use to make the About HUD link active in the navbar.)