@n_anirudh - Hamilton was presumably waving to voice his displeasure at Maldonado holding him up on his flying lap. Pastor aborted his lap and still tried to turn in on Hamilton on the last lap, a move that in itself was worth a 5 place grid penalty.
Look, plenty of room in front, left a large gap to the left, and was travelling slowly enough that Hamilton was able to steam up the inside.
Then tries to turn in and run with Hamilton through the entire corner. Remember the flag was out so they couldn't get another lap in and Hamilton was currently in 11th place and needed to set a time. Pastor had aborted his lap, as evidenced earlier in the sequence by being on the gearbox of the car in front to having that massive gap as in the first picture above.
That Maldonado tried to follow Hamilton around the outside causing minor contact was reason for him to be penalised for impeding another driver during qualifying and was the cause for Hamilton's hand waving later on.
Hamilton managed to get ahead and blasted down the straight to cross the line and make it in to Q3. He then ran wide in turn 1 on the cooling down lap, whereas Pastor did not and carried more speed through the corner. This gave him the run on Hamilton down the proceeding straight. Lewis started to move back to the racing line as Maldonado started to come past, before realising another car was there and moving back offline. That is what you refer to as his 'jink to the right'. It was nothing more than a move back to the racing line before seeing the other car and moving out of their way.
Seeing it was Maldonado Hamilton then raised his hand to voice his displeasure about the incident two corners ago - not particularly necessary but nothing wrong with it, and certainly other drivers seem to be prone to doing that and suffer no reprimands. As evidenced by the on board footage where you can see Hamilton's steering wheel, he holds a constant radius gentle turn to the right following the curve of the track.
Maldonado then chops across his nose and high speed damaging both cars. Pastor was off the racing line and moving away from it, so it wasn't a case of following the track - he deliberately crossed the width of the track in order to hit Hamilton's car.
At best I can believe that Maldonado intended to chop across Hamilton's nose missing both cars, but badly misjudged it. But in reality I think it was an incredibly stupid and dangerous move where Maldonado deliberately hit another competitors car.
Jink or no jink, hand waving or not, there is absolutely no justification what so ever for what Maldonado did, and I can't believe that we're even having to have this conversation. As Brundle said that guy should not be on the grid for the race. What kind of message does that send out to young drivers all over the world - that when you're pissed off it's okay to deliberately drive into other cars risking the lives of all those caught up in the ensuing accident. The worst you'll get is a slap on the wrist.
How would you feel if Vettel used such tactics to seal the championship? Should he only get a 5 place penalty if he won in that fashion? (I'm not saying he ever would, thankfully I don't think he's that stupid).