Corrupt Photoshop file changes text when clicking in text layer

I have a really weird problem with one of my files. When I click on the text, it changes the text to completely different words. Seems like it is corrupt somehow... please see below images to see what I mean. Has anyone else experienced this? Is there a fix? I'm on CS6 mac OS 10.8.4.

Before:

After:

Out of curiosity I also opened up the file in text edit to see if there was anything obvious, and here's some of the code. I'm assuming this is preview text for search, but either way seems a bit fishy.

<rdf:li rdf:parseType="Resource">

                  <photoshop:LayerName>Partners</photoshop:LayerName>

                  <photoshop:LayerText>WE WILL BE...</photoshop:LayerText>

</rdf:li>

Trying to edit the text and saving it out corrups the file.