Thank you all for your insights, which really helped me better understand that the behavior of this JW is no surprise at all!
Gathering from all your inputs, now I see that any combination of these factors contribute to a JW's behavior when questioned about his or her beliefs:
* Theocratic warfare - such a strange concept will of course generate no less than that "strange" behavior
* Filter on - reforming beliefs to best suit what's wanted
* Ignorance of WTS history
* Believing in the lies of the WTS
* Cognitive dissonance
Chook - that's a great idea! I will ask hypothetical story next time I run into a JW about emotionally cruel practice of shunning.
ToesUp - I do feel like banging my head on the wall each time I deal with a JW who's still closed minded.
By the way, I never formally introduced myself to this board! I was exposed to the JW religion through a JW I met almost 10 years ago. Thankfully, because of the internet age, right from the get go, I knew the WTS is a false religion. Since then on, I've been trying to help this JW friend of mine realize and accept the TTATT. My latest attempt at trying to get him to question his faith on the WTS ended up him cutting off communication with me. By the way, he is blissfully ignorantly working at the Warwick Bethel now. Since he went cold turkey on me, I've been trying to understand why he behaved in such a way, and lo and behold, I found this forum! You guys have really helped me understand why JWs behave the way they due because of the mind control they are under. As you can see, my only extensive experience with a JW is with this particular JW friend. So, yesterday, when I met another JW at this literature stand, I was again shocked.
Thanks, you guys, you are very amazing, for helping me realize that this no surprise!