No guilty feelings here. This dog stands by his destruction, and he'd do it again, too. At least he's owning up to what he did rather than pretending it wasn't him. There's no shame at all.
I have to say, this dog is pretty badass.
Note: The Dodo reached out to a behaviorist at MSPCA-Angell, and though we can't determine exactly what this dog's sassy behavior means, it is still unsafe for dogs to have their teeth on a wire cage as shown in the video.