Farewell, Athena account

[1] shewu@mass-toolpike> blanche ec-discuss -a shewu
blanche: Ticket expired while authenticating to Moira.
blanche: Authentication error while working on list ec-discuss
blanche: Try the -noauth flag if you don't need authentication.
[2] shewu@mass-toolpike> kinit
kinit: Clients credentials have been revoked while getting initial credentials

I thought I was clever by leaving my ssh session open overnight, during which the administrators almost certainly would deactivate my account. Today, I tried listing my files and was told "Permission denied."