Plagiarism in a CRISPR paper

A blog on stem cells, The Niche, has published an account of the publishing of an erratum on a CRISPR journal article. CRISPR is the technology used to copy slices out of DNA and paste them in other places, if I understand this terribly oversimplified description correctly. The author who was plagiarized kept exact notes on his extensive correspondence with the publisher (Springer). It's an interesting read, as it raises multiple issues.