Witnesses often go on about apostates being spiteful and bitter. When you get cut off, shunned, or threatened with shunning just for the audacity of thinking differently, it's not surprising that getting angry at the Witnesses is the reaction - it's like a self fulfilling prophecy.
But also, I recently posted an email from a 'friend' on this board who told me that everyone he'd spoken to about me said I had changed, become like another person. It didn't occur to him that the day before I told my parents I'd quit the religion just 3 weeks ago, I met him for lunch, we had a good time and he didn't know anything was up. I haven't changed, what's changed is people's attitude toward me.
We grew up down the street, were in the same year/grade at school and in the same Congregation, lifelong friends, but the instant he found out I had different beliefs his programming overrode that and he decided I must now be evil and demonic, so he's projecting that on to me.
Even though I'm going out of my way to not be seen as the apostate stereotype, by being polite and understanding in every conversation and email with every JW, I'm still seen as an apostate stereotype. You can't win!
Anyway, on that note, I found this article "Beware the Bitter Fruits of Apostasy" really fascinating, it reads exactly like something you'd see in a Watchtower, but it's on the Mormon website.