I think that showing T going to kalyaani's house in time of need and now with kalyaani paying the fees, the ct may be specifically focussing on T-Kal's bond, This may have some significance and may have to do with the upcoming mohan'kalyaani-padma track.
TA's behavior, on second thoughts (and many thoughts later) may be the CT's way of washing off TT's guilt factor with respect to pei. Also TA being who he is, always closer to gw and lav than puvi, it is difficult for him to disconnect with them totally..although he was ready to do that after vel track, and had not T persuaded him to make up, he wud have certainly regretted his decision to keep away from them at some time...Now having given gw and lav a chance , if things go wrong for gw and company, they have only themselves to blame..
In fact i feel the biggest aapu for gw and lav shud come from pei herself.. Pei has been nice to lav and gw and pocketed them comfortably, but one feels it is certainly only on account of gaining her ground with TA. If that is not possible, one wonders what her attitude towards gw and lav wud be...
Certainly going by the events in this track, it seems more like TA giving an opportunity to pei, gw, and lav and putting T at a disadvantage. Even with so much going for them it wud be interesting to see how they handle this success the pei kootam so much wanted - that of keeping T away from studies and TA-the two most important things for T. T has bounced back as far as college is concerned and one waits to see how she regains TA. Looks like the CT has put all other reasoning in the background as it wud come in the way of this major lesson in the life of TT.