The thinking in those years 1973 - 1975 was that when "The Persecution" hit, JWs would be forced to operate in small groups, completely cut off from "The Organisation". Consequently, much emphasis was placed on ones "relationship" with Jehovah - and reliance on the conscience as a guide, rather than directives from that same "Organisation".
From about 1982 onwards though, we once more started to hear much about "The Visible Organisation".
Bill