Infighting in Roush's House, Edwards A Bully?

Is NASCAR's Carl Edwards' clean cut, nice guy behavior all a front? That's what his Roush Fenway teammate Matt Kenseth says:

"I thought it was good in a way that the cameras were there because a lot of us see that, and nobody else does because he kind of puts on a different front.

"His behavior has been real erratic lately, honestly. You don't know what to expect with him. That's the thing that's a little bit troublesome. One minute, he has so much respect for you, and he's real friendly and everything's so much fun. The next minute he wants to kick your butt and he's swearing at you. It's a little scary. You never know what you're going to get."

I'm not sure Kenseth is unbiased in his opinion, but I must say, Edwards' post-race behavior in Martinsville speaks for itself. Kenseth's comments immediately got the attention of a reader who emailed me asking:

"Now I know Carl takes good care of his body telling from the pics on the cover of whatever mag he was on. Maybe this is coming from me being a nurse and hearing about it a lot, but do you think Carl suffers from roid rage from using steroids? I am not sure if NASCAR tests for them or not.

"I hope you don't consider me a nut case, but that is the first thing that popped into my mind when I saw the altercation."

Carl Edwards on steroids? I hadn't considered it, but I'd hardly say it's nuts for the thought to cross someone's mind. I do wonder if it's crossed NASCAR's.