Board Thread:General Discussion/@comment-33432469-20181010170210/@comment-1038387-20181010192427

It's not really policy, more interpretation of the Terms of Use, and in that, it is public. As a global block usually comes out of a violation of the (rather vague) Terms of Use, and the Terms of Use is an agreement between the Company and the User, things are only discussed between these two parties.

The biggest chance of an explanation is hope other parties were involved, read this thread, and share their memories of any incident this user might've been involved in. I remember the name, but can't think of anything that happened.