Jimmy Spencer says Childress was wrong:

from a Jimmy Spencer article on SPEED – But take it from someone who has been there – Childress crossed the line in punching Busch. No one should ever hit or physically confront another individual. Arguing, hurling insults or yelling at someone is okay, but you shouldn’t touch them. I picked the wrong way to handle my problem with another Busch brother, Kurt, years ago, and I still regret it. I think Kurt learned something from me punching him but I learned more, and if I had the chance to do it over again, I wouldn’t have hit him. I’ve been in several brawls in my time and nobody ever wins. Childress got off too easy. NASCAR should have come down on him harder than a $150,000 fine. They should have suspended him for three races – that would get his attention. He took responsibility for what he did but never apologized because he’s really not sorry. I speak from experience when I say that situations like last weekend’s affect the younger generation a lot, especially the kids watching our sport. My biggest problem with what Childress did stems from the fact that he is representing major corporations with thousands of employees. Yet he let his temper get the best of him and he assaulted someone. That gave the sport the biggest black eye it has had in years. Fans and folks inside the sport may think it’s funny, but these companies probably aren’t happy about having a car owner representing them who assaulted someone.
And believe it or not, I think that Busch’s sponsors can be proud of the way he handled himself. We’re usually criticizing Busch’s behavior, but I admire him for not fighting back and also for staying in the car at Darlington when Kevin Harvick came up to his car on pit road. Busch is the most exciting driver in our sport right now. Yes, he ruffles feathers, but so did the late, great Dale Earnhardt. But Earnhardt didn’t outright attack other drivers. I admire Kyle for respecting Childress enough, although he got punched, to not punch back. It takes a strong person not to retaliate.
I still don’t really see what Childress was so upset about. Busch wasn’t out of line in bumping Coulter’s truck on the cool-down lap. Rewind a few laps to when they were putting on a hell of a race for fifth place and Coulter slid up in front of Busch. If Busch hadn’t lifted and let him go, both of them would have wrecked. Coulter was the one at fault there, so Busch bumped him after the race to teach him a lesson. That’s just part of racing and how you teach younger drivers who are coming along. Sure, Busch did a little damage to Coulter’s quarter panel, but he also did the same to his own truck.(in part from SPEED)(6-9-2011)