Barbara Anderson wrote an interesting article about the reasons behind the thaw: http://www.freeminds.org/doctrine/education_anderson.htm
Relevant quote:
"One member of the Governing Body of Jehovah’s Witnesses, Lloyd Barry, now deceased, attended university in his youth in New Zealand. In the early 1990s, he expressed himself privately to some members of the Writing Department at the headquarters of Jehovah’s Witnesses’ organization in Brooklyn, New York, about a needed change of attitude towards supplementary education, but not because he had attended university. Lloyd Barry was empathetic towards the low-paying job plight of Witnesses as expressed in personal letters received at headquarters, and from Jehovah’s Witnesses branch office communiqués from around the world. He said that in certain European countries jobs were not available to Witnesses, even in fast food restaurants, if they could not produce a resume which showed supplemental education after high school. Due to difficult economic changes in a world that Witnesses could not escape from, Lloyd Barry, along with the rest of the Governing Body, authorized the November 1, 1992 Watchtower article that changed the view of Witnesses towards higher education.
Interestingly, another Governing Body member, Dan Sydlik, shared with a friend that the Watchtower Society was finding itself in a difficult position because this mammoth publishing company needed skilled technical people but couldn't find them in the Witness community. So it was decided to allow a somewhat more liberal attitude towards a college education, knowing that some percentage of students with the necessary technical skills would eventually volunteer to become part of the staff at headquarters"
I used it in the mid-90s to move away to university and then drop the borg. It was still very much frowned upon in comparison to the joys of being a window cleaning pioneer. Still had to justify post-16 education by choosing some courses which fitted the 'serving where the need was greater/I really want to work in Bethel as a translator' figleaf of an excuse one could use.
My apologies to those younger than me who found the door closed because I, like so many others it would seem, used it to get the hell out of dodge. >_>