A few years ago, I found a conference paper, of which I was a co-author, being re-published as an article in a (not highly ranked) journal. It was a textbook example of plagiarism, copy-pasting whole sections and using figures from our paper, which the author did not even cite. The author came from a foreign country and was an associate professor.
My co-author wrote an email to the author who committed plagiarism and asked him for an explanation. After a while, he admitted his misconduct (a soft version of it); his explanation was that he forgot to cite our paper. As a settlement, he suggested a new article to be written together with us. Without consent, he wrote a new article (in his language) and published it in another lowly ranked journal, putting himself as first author. I was listed as a co-author without being able to comment on the idea of writing this paper and without approving its content before publication. For me, it looked pretty much like a (self-)plagiarism---a translation of the original English paper. But, at that time, we did not want to further complicate this weird situation.
My question is how to deal now with this article I co-authored and could even be treated as a kind of self-plagiarism. May/should/must I exclude it from my CV?
PS. The publication of the journal we are talking about stopped five years ago. So, it is not possible to contact the editor any more.