Pai was not disowned. He chose to be disowned cz he wanted to save Tim from the lawsuit. He did it to himself…
After getting that lifetime of a shock, he gets no hug or comfort from his family. He immediately apologises as he probably has been taught since childhood that he has to be perfect otherwise he is a disgrace. His brother is sincere but is naive himself, so there is practically no one who is capable of calmly assessing his situation, and helping and protecting him. His only option lies now with the very people who wronged him.
Even if Tim wakes up tomorrow, turns his whole life around, and checks every single box on the redemption to-do…
If (when) Pai takes him back, it would be a case of Stockholm syndrome. Pai has absolutely no one in this world save for that naive North, who asks Tim if he loves Pai, hours after learning what Tim did to other women.