I agree that I felt better about it after I learned that. To me, it's two totally different situations. Carrying it on you shows that you're ready to use it if provoked. Locked in the trunk? It's still accessible, but not nearly as close. It would be alot easier to walk/drive away from something if the gun is in the trunk, IMO.
I think what the article is saying is that the situation is different than what everybody thinks now, and I don't see how that is possible. So far, we're lead to believe that the gun was unlicensed, in the trunk, and belonged to Marshawn. We know that because he's come out and said all of that. I think that the "source" is saying that it's different. I just can't see (short of Marshawn going in and saying that he was covering for someone else) how it could change in his favor.