How do you kill a rogue or stalled VM from ESXi which has no COS!?
Duncan Epping published a blog post where he gives us the answer:
login in unsupported mode: Press <alt> + <f1> and type “unsupported” <enter>
List all running VMs: vim-cmd vmsvc/getallvms
Kill VM with vm id: vim-cmd vmsvc/poweroff