I'm one of the ones to leap out of the woodwork and shout that copying is not theft, so it's only fair that I point out this; torrenting is a massive copyright violation, as you are basically republishing the content. What Amazon did in this case is not against copyright, and the user had no claim to copyright of that work anyway.
Make no mistake; I disagree with the humongous damages leveled against torrenters and I would be dead set against allowing an ISP to redirect or disconnect a user.
But Amazon doing something they claimed rights to in their ToS and sharing a copyrighted work via torrent are quite different.