OK, I'll regurgitate the putrid meat if you really want it. At least here's some stuff I can remember.
Nothing earth shaking on the TMS that I can think of. Unless you consider a #4 talk reminding everyone of the suicide-pact blood policy to be earth shaking.
The Circus Meeting had an excrutiatingly long "Audience Discussion" of the annual Letter from the Branch which is on the front page of the KM. Maybe this reminder of how great the Org is doing was the catalyst for your parents. The U.S. had an all time peak of Regular Pioneers if anyone cares. A little over 103,000 if I remember correctly. Woo hoo. The letter also talked about the displaced Bethelites ( I think, or maybe the brother just took it upon himself to go off in left field, can't remember for sure.) Anyway, the white-washing he gave of how well the middle aged Bethelites are doing now that they've had their security blankets yanked away was truly nauseating.
Then there was a long Q&A part on how to preach better (I think). I TOTALLY zoned out on this one. Actually I think it was more of a "Beat the Sheep, DO MORE, DO MORE" article.
Anyway, if anything was the catalyst for your parents, I'm guessing it was the Branch Letter. I hope not though. I'm hoping they're just allowing themselves to show a little humanity.
Open Mind