Why am I not be able to pull in accounts from the local server into the vSphere vCenter system,
Have you verified that you can access the local accounts using ordinary Windows Computer Management? Just to make sure there is no Windows permission problem that keeps you from touching the local SAM database.
I want to remove the Administrator(s) which I am assuming is from the local server, off the system as an Admistrator role because it has my SQL DBA in it. I should leave him in that role to manage SQL on the server.
You are of course aware of that if the DBA wants he can gain access to the vCenter since he is in the Administrators local group? But if you just do not want him to accidently access the vmware enviroment it should be fine.
The Administrators group which by default has the Administrator Role in vCenter is the built in local one.
If you can access the Users and Groups management page, could you try to create a new local group, adding the local Administrator to the group and then try to give the new group the Administrator Role in vCenter? If there is any trouble with giving access directly to accounts.