In the upcoming trial the court might come up with the conclusion that Ponyboy was involved in the manslaughter case, which proves that Darry is not a good guardian and the brother will have to leave him.
Ponyboy is a smart and handsome character which is involved in a gang called the greasers. Ponyboy was initially afraid of Socs and thought them to be dangerous enemies.
The upcoming court trail might proof that Ponyboy was involved in the case of manslaughter, which indeed will show that Darry is not a good guardian to the brothers, and the brothers will have to leave the home.
It was important for the brothers to live together because, Ponyboy was influenced by the bad company, and he should be kept in the care of his brother, as they loved and cared for each other.
Therefore, it was important for the brothers to live together as they took proper care of each other.
Learn more about, Ponyboy's character in "The outsiders story",
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