While on the face of it, his behaviour appears to have stemmed from a revenge plan gone wrong by his unexpected feelings of love for his victim, I wonder whether there is more to it.
All this time though, he managed to control the pace and speed at which their relationship was progressing. While his forgiving Mallik was part of the God complex at play, Madhu's finding out about it and the consequent reverence she had for him seemed to help him achieve his revenge objective. However,living with the woman and receiving her unconditional love softened him enough to allow himself to develop deep feelings for her.
His arranging Pads-Mallik wedding can also be explained by this need to be the 'Mover and Shaker'. The great RK decides and the rest fall in line. That the cause was a good one and strengthened Madhu's respect and love for him was an added bonus.
Now when the ship of his life was sailing quite well, what was the need to turn it upside down? Here is where I think Ballu's attempt on Madhu's life changed the course. The moment Ballu was all set to pull the trigger on Madhu must have been the worst moment of RK's life. He must have been swept back in time to when he was the scared 12-year old who could not stop his father from dying and leaving him behind. Thankfully Pads saved her life and he was eternally greatful for that. He left no stone unturned to get her out. His guilt at bringing back Ballu into her life made him shy away from meeting her in the eye. The lover in him was happy that she did not think less of him either because of this or all his previous acts.
Unfortuntely the more he was trying to get away from her, the more she engulfed him in his thoughts. As though that was not enough, she has landed on his set, her physical proximity further weakening his resolve to keep her away from him. He is resorting to his tried and tested manipulating skills to unnerve her and chase her away but he himself is getting caught in the web he has been weaving in the past two weeks. Every wound he is inflicting on her is coming back to hurt him twice as hard.
Now what is inexplanable in this revenge-turned-love-turned revenge story is his beviour towards his God and his mom.
RK's reconciliation with his God and his mother seems real. He seems to acknowledge in his mind that it was Madhu who brought about this difficult feat, considering that his relationship with his Bappa and his mom were strained for years. Now if he was indeed such a control freak as I have made him out to be, would he have not thwarted everything that she has taught him, just to show that she cannot influence his thoughts and actions? He does not do that. He continues to respect his God and his mom even when Madhu is not around to witness it. He is definitely a changed man and his conscience seems to be very much alive. Then why does he still indulge in the drastic acts against the woman who restored his faith in God (Bappa) and mankind (his mom)?
I don't know if I made any sense in all that rambling but as confused as I am I think this is a war between control and compassion within RK's complex mind and poor Madhu is caught in the crossfire.