I'm trying to give a place where the user can launch the recovered version of the file. The salvaged text is right in front of them in the text area. The button is to launch the recovered version which might have the formatting too.

The recovery process is different from the text salvaging. The text salvaging is done by a command line app. The recovery version is created by unzipping the Open Office File and replacing one of the XML files with a simplified version and then rezipping all the XML files back into an Open Office file again. Sometimes this allows for recovery after file corruption.

Here's a screenshot.