And it is a good way to describe it. The story just stops completely dead in what seems like the middle of the Exile's exploits.
In the light side ending, you kill Kreia on Malachor V in the core of the Sith Academy and then fly away with your party in the Ebon Hawk with no indication of what happens next for the Exile or the Republic.
In the dark side ending, you kill Kreia and then the camera zooms out through the top of the Academy where you've just become the new Lord of the Sith where you presumably sit there and meditate on being evil for all eternity.