May be Jai will announce to Bani that he is all set to marry Pia since she is carryng his child and he loves her still, to get Bni out of the shock and also to handle Pia.He has only 24 hours to handle both the crisis- his child and his wife and his mind works best under pressure so may be , just maybe, he plans to do the above and when Pia is done giving birth to the baby, he leaves her and dissappear.
BTW, How is JW going to make a comeback as more powerful and ruthless person when he will have no money, nothing to support himself for the timebeing and why would he build a successful empire if he has no motive to live apart from the baby and why would he comeback in the first place if he thinks that he is guilty? I still think that once Bani comes to her senses, she will leave WM.