Grain of Truth
As a consumer, I don't want ANY GM contamination in my organic produce. My grave concerns about GM crops are what's been pushing me very strongly towards buying organic.
I don't think NASAA isn't the peak body for organic farming, either. I think it's just one of the certifying bodies. But good on them for sticking to their principles!
Consumers don't want GM, by and large. And if farmers have any sense (and read into the very horrible truth of what GM crops have done in many other countries) they won't want them either.