Also, had not Raymond Franz been forced to resign, he might not have gone anywhere. It's easy to suffer a crisis of conscience when you've been booted out.
I always wondered what would happen if there was a split. If Franz had denounced the faithful and discreet slave thing immediately and accused the rest of trying to wrest the authority of the "true" slave, he might have been able to seize on a few more unpopular doctrines and create a rift. He might have also made the argument that the GB was the prophecied "man of sin" who was to bring about a mass apostasy. He could have reasoned, too, that the year of apostasy (1980) was the one in which the "generation" in which Armegeddon would happen:
Now we beseech you, brethren, by the coming of our Lord Jesus Christ, and by our gathering together unto him, Let no man deceive you by any means: for that day [Armageddon] shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition, who opposeth and exalteth himself above all that is called God, or that is worshipped; so that he as God sitteth in the temple of God, shewing himself that he is God.
By trying to expel the anointed class as the faithful and discreet slave, this "man of sin" would be trying to oppose the true order of governance and exalt himself above all that are "called of God" (meaning the true FDS) and seek to take the place of God in the temple [Bethel], essentially "shewing himself that he" (the GB) "is God." If Franz had made that claim, he probably could have torpedoed the Society and eased the bruised feelings of dissatisfaction within the Outfit.