We need a way to disable everyone else from signing up to a plan except for the admins of the site. Basically they want new users to call in to sign up because they want to screen who is signing up (long story). Anyway, the problem is that if I set the plan to be published but only accessible to super users, you can't sign up new users and have them pay be credit card with that plan. You can still upgrade and renew from the front end if the user already exists. Do you have any ideas on how to allow the super user access to a particular plan for new sign ups but block that same plan from the public?

They can do it from the backend. The problem I am encountering is how can they account for the payment in cbsubs? When you sign them up through the backend, it just gives them the plan without paying or recording a payment. They need to record the payment for their records.