Apparently is does contain MSG. But it is the last ingredient so it may not be much.http://www.fooducate.com/app#page=product&id=8D143EDC-E10D-11DF-A102-FEFD45A4D471
As an alternative (I'll be doing it since I don't like to keep a whole bunch of boxes of similar things in my pantry), just use AP flour and add your own spice/herb mix. Shouldn't see much, if any, difference.
Hey RG, I just checked can get this flour at Wal-Mart in Kansas City. I will be making these soon. As I think the Vidalias are in now. Tell your wife thank-you from me.