I do think that the LSM Exile verison of Kotor 2 is right.
His relationship with HandMaiden and Kreia is the key.
How would Kreia get into the Secret Jedi Academy on Telos unless A. She tricked Handmaiden. or she had a secret alliance with Atris?
I rather believe that She tricked Handmaiden that Exile is dead.
Kreia is a tricktser.