Yeah, they have you there, man.
It isn't REALLY the REAL SNS, but the real way to get the Ice Key... just using PJ insteasd of a '64. By forcing it to load the other games data, thus forcing the disable DK64 swop flag to go off, it activated the swop flag in BK, thus collecting the Ice Key. Its still the real way, its just forcing it to do it the real way.
@ Loser Conker: Pretty much, yeah.