Johnny decided that him and Ponyboy were going to go back home and tell the cops that they are back. When Dally heard this he was shocked, he didn't understand why they were going back after being free in the country.
We're goin' back and turning ourselves in
As the three boys were going back to the church they saw it up in flames and started to panic. They figured since they smoked, one of the cigarettes might have lit up and started the fire. Ponyboy knew that he needed to help so he ran straight into the fire.
I bet we started it
We're going to get you out!
"Dally swore at me and clubbed me across the back as hard as he could, and I went into a peaceful darkness"
"'Where's Johnny,'" Pony cried, frightened about being in this car with strangers, "'and Dallas?'" 'They're in the ambulance right behind us'"
After Darry had hit Pony things had changed. Then when Pony ran away Darry didn't think he would see Pony again, and when he found out that Pony was in the hospital Darry thought that the Curtis family lost another member.
Oh Pony, I thought we'd lost you...like we did mom and dad