You can get to the pdf preview inside the Pages document without Pages, but it's a liitle involved. It might be better to try on a copy so you'll have the original to fall back on.
1. In the Finder, rename the Pages file to add ".zip" to the end (somedoc.pages should be renamed to somedoc.pages.zip).
2. Double click the renamed file. The finder will unzip it and produce a second file with the original name.
3. Right click (or Control click) on the new file and select Show Package Contents. A new Finder window will open
4. You'll see a couple files and a Quicklook folder. Inside the Quicklook folder is a file named Preview.pdf; that is the pdf version, which can be opened in Preview. You can copy the text (without its formatting) and maybe some of the images, which should at least help with reconstructing the document in Word.