When I say it is is time for Robbie to step back what I mean is that he should just sit down quietly in a corner and watch the story unfold around him...if he were given a clean slate I am sure he do things differently, but what has happened has happened, nothing can change that...yes, he caused the major upheavel in Raunak and Kasturi's life, but that is done and dusted and he should put a nail in that coffin...if he tries to act like raja harishchandra ^3 and tries to give Raunak his business and kasturi, he will only commit more mistakes.
Nobody in this story is without blame and so there is no need for Robbie to be anyones saviour. If raunak is a half decent businessman/entrepreuner, he will be able to resurrect his business without any help from Robbie...and as far as Kasturi goes, if Raunak has suddenly woken up to the current situation (ie the ping pong game between him and robbie) and wants to pull out, I think it is upto Raunak. Raunak in all probability has realised that he has lost everything he had ever worked for in his life for one person, Kasturi. And now he wants to hedge his bets on getting his life back together.
Kasturi should go somewhere (if the divorce happens) and purge herself of all the accusations and declarations of love and trust ...and perhaps return when all scarrs have healed on all sides. Kasturi loves neither Robbie, nor Raunak...with Robbie she was in love with the idea of being in love; with Raunak she is in love with the idea of being married...so again, there is no need for robbie to sacrifice all for a love that did not exist (for him), does not exist (for raunak)
Robbie should clip on his seat belt and watch the drama unfold, especially now that we have a new player in the blame game - nandini.