Zoho docx export makes Word think it's in Russian

Zoho docx export makes Word think it's in Russian

Hi,
I just started using Zoho Docs today, and I noticed something strange in the docx file I exported. As soon as I opened the file in Word (for Mac 2011 version 14.0.2), almost all of the words had the red squiggly underline indicating they were spelled wrong. When I ran spell check, I noticed the dialog said "Spelling: Russian" at the top.

Nothing else on my computer is set to use Russian language.
New documents in Word use English.
Documents exported as .doc from Zoho do not have this problem.
Both documents I exported as .docx from Zoho (including the Welcome document) have this issue.

I've tried setting the dictionary to English, to no effect. Any ideas?