2011 Passenger Air Vent Inner "door" detached

[GregLang]

Passenger side air vent inner "door" has become disconnected from the outer open/close vents. I can see inside that the outer two "flaps that someone would adjust to change the air flow direction has disconnected from inner door but cannot figure out how to remove this assembly to reconnect then. Or...is it truly broke and I need to replace it? Sorry if I'm not explaining this very well...