Earlier quoted context omitted.
No, it's very clear what he did was wrong. He works in an industry that does not allow you to email code home or copy it off of company computers. Goldman might be a little different, but where I've worked, this was definitely a no, no, and you could easily be fired for doing it.
According to the original article, Goldman was actually violating the license terms of the open source software it had modified by not releasing it. Further, while you and I may have our opinions, a judge found Goldman's actions to be so egregious that he ordered them to pay the defense costs for someone accused of stealing from them. That is exceedingly rare, and wouldn't have happened if there were any doubts about…
According to the article Goldman would routinely strip off the license/copyright from off of the open source code file and replace it with their own copyright. And that is a violation of many open source licenses.