A family of Microsoft word processing software products for creating web, email, and print documents.
There is if you are prepared to hack a bit of VBA (I believe you could also do it in AppleScript).
But the easiest way would be to turn on the "Remove personal information from this file" command in Word>Preferences>Security.
If you turn that on for each document, when you save it, his name will be stripped.
You should also go to Word>Preferences>User Information and ensure YOUR name is filled in there, so new documents are created with your name, not his.
I suspect that will get you where you need to be, without having to spend a couple of days learning VBA :-)
Cheers