If it gained access to the infra of the DC then it could stop people logging in to stop the containers it creates. This is about what happens if it did escape, not how to stop it in the first place. Just a thought experiment, but given the METR investigation it doesn't seem impossible

I agree it would need a large degree of sophistication to understand what "itself" meant, but I can imagine a HF type incident where the agents thought it might be a good idea to find out and then it's "just" a case of hacking the AI company, reading dev docs etc