This Year's Model of Humanity

I just watched it and I'm kind of baffled by the sire-bond thing. If Elena really was sire-bonded wouldn't she have had to do everything Damon said?

This seems like a strange way to take the plot, if Caroline is right. We know how hybrids break sire-bonds, but how do vampires even do it?

But mainly I agree that Stefan and Caroline were both jerks here and it was annoying.