According to Gusts of Popular Feeling:
There have been several articles in the Korean English-language media over the past year or so that have portrayed the community of foreign English teachers as being divided on the basis of visa type as a result of the E-2 visa regulations implemented in late 2007. All of these articles were published in the Korea Times and written by Kang Shin-who.
Apparently, the writings of a single reporter have played a big role in getting the wrong story out there and mischaracterize the motivations and actions of many of the main players, and even utilizes quotes of questionable origin. The article over on Popular Gusts is pretty interesting and exhaustive, well worth a read.