When did the S Koreans send him back? Why?
D*mn Sunshine policy. That is why. Kim Dae-jung sent many N. Korean spies back home, who were serving long prison sentence. These were hardcore. They could have gotten a shortened sentence if they have renounced communism on paper. They refused. However, they were sent as a "goodwill gesture," in return for which we have Kim Jong-il's nukes.