In case there is no other workaround...
Unless you need some Adobe specific functionality, you could just uninstall it, and Install one of the many other fine PDF utilities.
Or...
For example, all I do in Access with PDF's is to create them for output.
For this I only need the PDF addin for MS Access:
http://www.microsoft.com/downloads/details.aspx?familyid=f1fc413c-6d89-4f15-991b-63b07ba5f2e5&displaylang=enYou can just install the free Adobe Acrobat reader to view PDF files
(Which does not install it's own Ribbon tab)
;-)
JeffCoachman