I wrote my thesis in LaTeX and now my advisor would like to go in and manually make changes. I had assumed he would mark up a pdf or printed document, and then hand those changes to me to make, but he insists on actually making the changes himself. However, he does not know how to use LaTeX and does not want to deal with editing a plain text file with all the LaTeX markup everywhere.
What is the best way to convert my LaTeX document into something he can edit (preferably something he can open in Microsoft Word) so that it will still be in a format that I can easily convert it back into a LaTeX document?