Well, you could call me paranoid, but I prefer to think of myself as world-weary. And this "schism" in Anon right after a major attack on PSN reeks of a fabrication.
After all, it's very easy to commit acts such as these and pass them off as the work of a group of ANONYMOUS people to make them look bad... or worse, depending on where you stand.
Not that I endorse everything Anon does, of course, but this whole deal sounds like counter-propaganda to me. Wasn't there even a spilled document from an online security service some time ago that proposed to do exactly that to discredit Anon?
EDIT: Oh, yeah, I remember, it wasn't about Anon, but about Julian Assange, wasn't it? But the principle is the same.