So I tries the Onyx thing this morning. It gave me a JoinDomain_Task that will allow me to specify OU.
Luc can you help me incorperate this code into the other script I have so I can run this against all of my hosts? Thanks.
# ------- JoinDomain_Task -------
$_this = Get-View -Id 'HostActiveDirectoryAuthentication-ha-ad-auth'
$_this.JoinDomain_Task("prod.cyberintegration.net/cis/computers/esxi", "myusername", "mypassword")