The user wasn't Nuked, he was Autobanned.
So, and what does Autobanned exactly mean? I guess it's confusing because it's not like he was automatically banned. I understand that if he does not appeal his ban, he is permabanned, correct? It is not a temporary ban.
I don't know if there is a list out there of the different types of bans on bitcointalk, I haven't found anything like that.