SEOUL — More than 300 South Korean workers detained in a massive immigration raid at a Hyundai plant in Georgia will be released and returned home, the South Korean government announced Sunday.Kang Hoon-sik,SEOUL — More than 300 South Korean workers detained in a massive immigration raid at a Hyundai plant in Georgia will be released and returned home, the South Korean government announced Sunday.Kang Hoon-sik,