Herald of The Warp
Join Date: May 2013
Location: Odense, Denmark
I must admit I don't see the big question here - it says until the end of the psychic phase specifically; Hence the other librarians cannot cast in that turn, as when the phase ends, so does their ability to use any sort of psychic powers. You are then in the shooting phase.
Seems to me like intentional misinterpreting to me.