I appreciate that you caught Dietrich mentioning the issue of the "accidental" death of Vinny Barbaricks' parents. Dietrich mentioned the topic but said Vinny had brought it up earlier, not himself and Brooke later, which is why I didn't find it.
There must be a way of finding a news report or mention of the accident. All Vinny reveals is that it happened in California when he was in his late teens.
I have always been suspicious of it but lacked any details. I will have to review the audio from your timestamped posts, but it seems very odd that Vinny would begin his journey into Scientology and the rest shortly after and that it is so very similar to David Anderson abandoning his wife and daughters for a life of lies and deceit, also financed by inheritance(s) for the deaths of his parents that it is uncanny.
It is also curious that Vinny would have published any details and when. I assume one would have to purchase a book for that and be disappointed. As you know, I do not have any respect "Peter Moon" and much less for Anderson and Dietrich, and consider them deceitful con men and vicious liars. My only consolation is Vinny's apparent deteriorating cognitive skill and my exposure to himself, Dietrich, and David Anderson which continues to relegate them to the shit can of history.