I've never seen this before. Although the red trust is still not deleting an account with all messages for no reason.
Example of permabanned account that was too similar to well known user. https://bitcointalk.org/index.php?action=profile;u=2236185
https://bpip.org/profile.aspx?p=theyoungmillionaire007
. Probably this user was banned for plagiarism or spam.