I'm pretty curious on who that user is, let me guess?
ICOEthics? Coolcryptovator? Last guess would be iasenko?
I think you missed one potential member who could do this work!
VeleorHe is been spotting Plagraized Posts from much time too.
Even if a decent contributing member is banned in this saga, he could just appeal about it. As Theymos has already said this is a case-by-case approach and would be handled same.