I seemed to have resolved the issue I was having with permissions.
In Word, I specified the File Location [Word>Preferences>File Locations] to the folder where my misbehaving word docs were located. I clicked on Workgroup Templates, then Modify, then navigated to my folder. In finder, you may need to use command+shift+G
to bring up the "Go to the Folder" menu if your word docs are hidden in the "private" folder.
This fixed my issue. 
This seems to me to be an extreme fix that I would not recommend to other users.
The Workgroup templates path should be blank unless set to a network location that contains only templates. It should never come into play unless a file you open has an Attached Template. You can look to see if this is the case if you can get the document
open: in Toole>Templates and Add-Ins, either the Document Template will be something other than "Normal.dotm" or there will be an entry in the "Global Add-ins" box below it.
Unfortunately, there is no way in Mac Word to discover whether a document has an Attached Template unless you can get the document open (say, in Word 2011, or in PC Word).
However, Attached Templates are extremely rare these days, so I would be surprised if that is the case.
Theoretically, "no" software should ever have access to the /var folder unless the operating system sends it there. Certainly Word should not be playing in there.
So I would treat this suggestion with reserve (in other words, "Don't do it unless you are comfortable rebuilding your computer from a bare hard disk -- because you may have to!").