This case is a tricky one, there's no dispute that he uploaded the code. The dispute is whether he took GS code on purpose.
And that's hard to prove either way, but the fact he deleted the shell history, etc. does tend to favour GS's viewpoint. He may have done it totally innocently but that's a hard argument to make.
Also here: http://news.ycombinator.com/item?id=1993567
Both have numerous comments.