Hi Jordan,
Unfortunately I do not have the answer to your question. I also want to autologon from command line, but I did not yet found a solution. Currently I enabled the autologon option in the VMware settings (http://www.advicehow.com/enable-autologon-in-vmware-workstation-8/) but it is a work around and it is not like I would like it to work.
Did you already got an answer via other channels?
Thanks for sharing.