Thanks for the helpful reply- The original docx file is 33KB, but the dump i get from the field is 643KB! Do you think this could be related to packing?

I don't have a hex editor at the moment (downloading as I type this), but from viewing the raw file in notepad++, the documents do not appear to be similar at all.... I'll get back to you when i can view this in a legit hex/bin editor