I can say in my experience as a born-in, yes I went a little off the chain when I first was df'd. For some of the time it was still teenage rebellion at its worst-I did everything that I was told not to just because I could.
Then the realization hit about after 6 months- I am doing myself more damage than good. However, I am a little more stubborn than some, so it takes a while to set in and discover what I never knew about myself before: that I had choices. Some good, some bad, but we pay for them all.
I think that after living so long of not having choices and trying to please everyone else, I was both selfish and self destructive at the same time after my exit. I believe born-ins have the select distinction of also having their whole social system taken away from them when they are df'd, which leads to desperate and despondant measures. Compounded with the predisposition to mental illness that JW's already have, with the sadness and self doubt that losing all your friends and family has at such a pivotal point (read: 18-21 yrs old) in many peoples lives and there is a recipe for disaster. I was lucky that I made an outcry because I was sucidial and told my parents I was. Therefore I got help outside (a psychologist) that helped me put things in perspective before I went too deep. Unfortunately, not everyone has the facilities or even the ability to tell their family how much they are hurting inside. I went from private reproof to public reproof to df'd in less than 6 months, and it was the worst time in my life, and it was all for NOTHING. As innocent as having a boy ( my best friend) in my hotel room to watch tv, with my parents room right next door, and things just went from there. So judge not, lest you be judged. :P