I also agree that I don't think he's "way past it". Perhaps he isn't as angry as he once was, or as much as Frey appears to be (although that's also subjective), but he definitely isn't past it, like he says.
However, I also don't think he "dissed" the Docu. He happened to be there every step of the way, and he simply says what we all saw wasn't the whole picture. Many people here do think that important parts were left out, as well as wanting more about the contributions of all 7 seven members, not just 2 of them (with a smattering of Joe & Timothy).
Finally... Felder (as much as I love him) is starting to sound like the leader of another band. The band is (was) Boston, and its leader Tom Scholtz is about as defensive as it gets. He focusing more on lawsuits, comments from outsiders and media than any musician than I know. If he just let things go and chill out, play music and enjoy, they probably would have lasted longer than they did (unrelated - Brad Delp had one of the greatest rock voices... ever)
Steve