I agree with the observation, and can (embarrasingly) say that when I was a good JW teenager, I did a similar thing once.
I was entering a local apt. bldg. to go "in field service" (or as I call it now, "door knocking"). A man approached US in the lobby and confronted us with some topic that typically confuses JWs (I forget now what it was, exactly, this was about 15-20 yrs ago).
After trying to "correct" him (using the Reasoning Book, and whatever other WT stuff we had in our book bags) the matter was still unresolved. So this guy invites me back to his apt. the following week but made me promise that I would support my points with non-WT material (since I said that I could).
Well, I spent some time researching (non WT books) and found that it wasn't as clear-cut as I thought. I couldn't prove my point using non-WT sources, not even close.
So, I never went back, even though I promised to this man I would. Tsk tsk tsk, shame on me. I felt really bad about breaking my promise, but I never really questioned the more important issue: why was the WT teachings so unprovable without WT references?
Yup, I too did the "fast disappear and never return" when things got too hot. You Know and Yadirf and I should now be best friends, right guys/girls? Lets hang out together!
~Quotes