> A snarky comment and a bad apology may be an instance of the second thing. But they don't imply the first.

Sorry chief, I'm gonna have to go ahead and disagree with you there. The snarky comment can be forgiven. (although I've since read other tweets/posts from David Cramer and it appears as though he really is that abrasive all the time)

By contrast, a bad apology is a clear indication of someone's true nature. If the apology is backhanded or otherwise poor, it implies a lot. If you issue an apology but don't really feel sorry, then you're just doing it to placate others, and you really are a jerk.