SCOSK Legalizes RMT

Thanks to Ren Reynolds for passing this around the backchannel: The Supreme Court of South Korea overturned fines imposed by lower courts on RMTers in Lineage. Does this mean that you can't have a ToS clause forbidding RMT? We can't tell. Can anyone help? And from the what-does-it-mean-for-me department, do US courts use foreign courts for precedents?