I don't seem to think of this(broadcast) as nothing else but a test drive.
Truthfully I have only read the diadem news about this issue so the picture I have drawn might be small:
The last couple of days the things have cooled down as the news changed from "Requesting T-ara to be cut out of shows, disbanded, etc..." to reports of KKS 'clarifying' the events with less ambiguous statements and even him apologizing (that was more business wise than actual feelings, but still, smart move); after the 'Hwayoung apologizing' part everything seemed to go from 10 out of 10 to a 3 out of 10 in the chaotic scale (this trying only to take in consideration the "official" reports, at least for the non-korean speakers), so this recording might have been allowed to be broadcasted to know where T-ara is standing after this crazy hell of a week (even though it might seem to be longer than that)
About T-jinjo my comment will not be to look down on them in anyway, in a place like Korea the netizens seem to have a lot of power, and for them to get hundreds of thousands of people join their page/cause or whatever was no small feat; but the netizens are only strong, courageous and demanding as netizens, where and when they can remain anonymous because that way you can get away with almost anything.
So I came with to think that when it came for them to actually show up as persons in real life all the mightiness that you nickname/username gives you it simply disappears. OR on the other hand as news (and the bulling evidence was countered) kept coming up their ideas and thoughts about the girls changed going back to good or at least neutral, that leaving only the true Anti's and or bully-believers as they haven't answered, yet, to KKS and arrange a meeting (as far as I know), sure everyone would like to know the whole truth and would be better to hear the girl's versions instead of the KKS version (a thousand times better) but hey that's a starting point.
The only statement from KKS that I daresay to believe the most would be about Hwayoung's personality being "tough and somewhat manly" as, at least to me, she doesn't seem to fit the all girly pink and flowers model, she just doesn't give me that vibe; an outcast, maybe, bullied, doubtful (she could beat the crap out of anyone, everyone have to admit that if she wanted she could've been intimidating) but anyways... none of the possibilities can be excluded as even if we knew what happened on site we wouldn't know what was going through their minds.
Maybe I wasted your time with my opinion, maybe I'll be agreed, disagreed or thorn apart; a last set of thoughts anyways:
Sometimes jokes could go too far.
Sometimes publicity stunts can backfire.
Sometimes the truth is not meant for everyone.
At the end all this is like ghosts and UFOs you chose what to believe and work your way around.