It means that they were incompetent. There are three posibilities:

• More than one person had access to the private keys and one of them disagreed with stealing funds.
• The account was created by anonsteem, the owner of anonsteem kept a copy of the private keys.
• The owner of the community321 account was/is a double agent.

Either way it shows that the people running the hardfork/theft don't know anything about account security.