Because after all by reading their email, I think it really sounds strange, it makes me think that they don't really hold copyrights (however I can't tell for sure), else why would they withdraw their claim?
I mean it's not really necessary, but I guess by knowing how everyone approached the problem, maybe we can work out the best strategy to get rid of these claims.
Piterus, rww, xNCx (I googled the copyright holder's email and stepped into twoj blok) and everyone else, can you possibly let me know of every YT account/video that got terminated/removed?