Jim,

If you mouse over each hyperlink individually and right click you'll get a dialog box - about halfway down is the "remove hyperlink" command to click.

I created a page with several hyperlinks and tried selecting all - right click that and the remove hyperlink command doesn't light up, so that won't work. Next, I asked Mr. Google "Microsoft Word accidentally turned all URLs to hot links" and came up with the following Office Support tip:

Remove all hyperlinks at the same time
If you're using Word or Outlook, or Excel 2010 or later, you can remove all hyperlinks in a file by using a keyboard shortcut.

In Word and Outlook:

Press Ctrl+A to select all text.

Press Ctrl+Shift+F9.

I'm using an enterprise version of the newest Microsoft Office, but you can find this in various older computer-installed versions of the software. Here is the page where I found that answer. I don't know if it's as simple as to do that to turn on the hyperlinks to begin with.