RAM non registered user I need to delete

We have 7.5.1.1 RAM installed for a couple of years now and we are trying fix a registration problem.Our RAM env is using IBM LDAP as a source for non registered users.  We have two sets of licenses floating and named licenses.

Scenario: New user was added to LDAP and when they first logged into RAM, RAM asked them to fill out the form and register.  The New user did not fill out the form and did not click register and this could have caused a problem in the DB.  Now every time the user logs into RAM they get access to RAM but the userid does not show up in the top right corner instead the user id says logout and the three icons next to the name are all grayed out. However, if I click on my dashboard as this non registered user, it shows the userid, but when I click edit it says this user is not registered so they can't edit their profile; This is significant for us because I need to add this user into a few critical communities in RAM, but I can't find the userid because something is not working during the registration process.

My request

How do I remove a non registered user from RAM database tables.  Or how do I get this user back to the initial registration form. Since this time subsequent users have registered and they are not having any issues with the initial registration in RAM.  It's just this one id that is having problems.