But it seems to me that even if you did know that he didn't mean what he said intentionally, you still would have banned him. Because you said that what he said was wrong, and no matter if he meant it or not, it doesn't matter. We get that.
What were not getting, is why he got this sort of punishment for what he said. And like what Kadar said, we know that Aries did was wrong, were just tryin to figure out why he got this sort of punishment.
The first lesseon a revolutionary must learn is that he is a doomed man. Unless he understands this, he does not grasp the essential meaning of his life.
And thus he isn't a revolutionary if he doesn't understand.