Cute Pdf will change word to pdf, but I don't know of a prog that would do the opposite. CUTE PDF
The other option of getting it back is in Acrobat reader, there is an option to save as text? This will save it as a text file therefore you will be able to copy all the text and paste in back into word.
Actually, I think Adobe Professional might give you a 'Save as' option other than the readers 'Save a Copy' option.