Yes exactly his alcoholism suddenly vanished over night from one phone call from Noor. Also he kind of proved Shaurya right that he was doing everything for Astha and not for himself when he stopped going to College after Anokhi got admission. Shaurya may be loves his father but he certainly doesn't respect him and I can't blame Shaurya for him. Shaan's self pity and pathetic state after Astha left him did a number on Shaurya who has the view that loving someone is giving away your power or control over yourself. So much so that it takes away a person's self worth. On the other hand he has seen Successful marriages of Devi and Tej and Alok Gaytri which are not based on Love but are practical and arranged. No wonder he kind of looked for Arranged marriage like safety with Shagun and not really gave the love marriage type vibe.Originally posted by: Idiotboxer
Again playing the devil's advocate. Shaan is a one of a kind character. A kind person at heart but otherwise useless because of his lack of spine. It would be wrong to say that his love for his Noor made him incapable of loving Shaurya. He loves Shaurya. Maybe he never was able to show it like his Badima does.
I remember during the library conversation he told Aastha that he spent as much time as he could with Shaurya but he felt that Shaurya needed a mother. Given that they live in a joint family and Devi was willing to take up Shaurya's responsibility, he thought Shaurya might find a mother's affection from her. Maybe he was not aware of how manipulative she could be. People sometimes fail to read their own parents or children with whom they have spent years, so it is no surprise that Shaan failed to understand his bhabi's true intentions. As we have seen in some earlier episodes, Devi doesn't even consult Shaan while taking important decisions regarding Shaurya, like inviting prospective brides over.
Shaan definitely loves his Noor more than anyone else. But he could do nothing for her as well. He married her and brought her into this family knowing full well that she would be stifled in that environment. He could not stand by her when she decided to work, nor could he move out with her. Even now he tries to justify his elder brother and feels Aastha was wrong to leave. He only tried to contact her over phone when he could have gone to Kapurthala if he really wanted to see her. In short, like Aastha said, he loved her but could never understand her.
Coming to Shaan's alcohol problem, I think it was plain depression, from seeing his family shatter before his eyes and unable to do anything about it. The guy needed therapy but no one in that house cared for him enough to see that. I think Devi and Tej might love Shaurya to some extent but they never loved Shaan. How that got cured by Aastha's one call is for the CVs to explain.
P.S. - I too don't think I will be able to continue defending characters if writing is so inconsistent.