Hi there
I may have narrowed this down a bit for you. The Olympic games were held in 1984 in Los Angeles. 14 Soviet bloc countries did not attend; neither did Cuba. So that narrows the field quite a bit. India was there, so if I'm on the right track we're looking for another country outside the Soviet Bloc and Cuba who had a soccer team at those Olympic games and whose players defected. So far I'm not having much luck. I may be way off track, but it was the main event of 1984 and a golden opportunity for defectors.