My bet “Eric the Red” Holder.
Roger Hedgecock has been following this story day by day on his radio show. He believes the BATFE did this on orders from Holder and his boss so that when guns were found in Mexico, they could be traced back to gun stores in the US and voila, the meme about all the guns in Mexico coming from gun stores in the US becomes proven truth. Unintended consequences? It is to laugh!