D3 is "self-release" if he wants to talk to another D3. He can talk to the juco without any release. Wouldn't hurt to talk to Rick, or even do an email exchange, but transferring isn't as complicated for D3.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .