Advice for registrations

[PorridgeBear]

I am interested to learn if there is a way to perform validated registration via FOSFacebookBundle. I've implemented the bundle together with FOSUserBundle and I can login and if no user exists, one is created.

However, I actually need the Facebook login to redirect to an actual registration page on my site that is validated for an activation code before I allow the user creation.

What elements would I need to configure/look at to achieve this? It seems FOSFacebookBundle logs in right away and provides no intercepting opportunity to prevent the create based on custom logic?