The modified Circle of Security is on page 5 of the following paper:
The Circle of Security project
The modified Circle of Security diagram shows what happens when either part of the circle is disrupted - when it is uncomfortable for us to leave our secure base (due to overprotective parenting, for example) or return to our safe haven (due to neglectful parenting, for example). It shows how we develop alternate patterns to stay safe...but the same pattern also prevents us from getting what we need, even when the situation changes and we could get what we need...it's like we don't even see the new opportunity, because the pattern to protect ourselves is so ingrained in us.
The paper also explains disorganized attachment, but I'm pretty sure that was too complex to show on the diagram.
I promise to get back to you on what he said about protest/despair/detachment!
SG