I think Danny and Mickey's comments are dead-on.
No, the guy didn't snap because he had been a jw. But he would have been vulnerable to their machinations in more ways than one. Plus, losing his mother at a relatively young age added a major life crisis that he probably never got over.
The witness factor is relevant. Anti-gay, they would have shunned him once he came out if he were active. The judgement day looming over their heads takes a while to fade even for those who leave on purpose.
Yes, it's very relevant. It should not be ignored.