Follow up with what I did so far:

-deleted Office folder
-searched with Spotlight and deleted anything Microsoft-related (fonts, plist, but not Entourage identities)
-emptied trash
-fixed permissions with Disk utility
-re-install everything back
-fixed permissions
-re-install updates
-fixed permissions

And now not even Entourage works anymore, so I'm downloading Libre Office and I hope I can work with my macros in it...