Do you get to choose the facing of a model that the Delaque psychoteric whisper "deceitful thoughts" was used to move?
My gut says no, since you can only choose a facing as part of taking an action and this isn't the model taking an action. Therefore, you would move them, but they would remain facing however they were at the start of the move.
I know with a similarly themed power--mind control--you don't get to choose a facing before shooting and are limited to shooting what they can see.
Deceitful Thoughts (Double):
Choose a single enemy fighter that is within 5" of the psyker. That fighter immediately makes an intelligence check. If this check is failed, the psyker's controlling player may immediately move that fighter up to their movement characteristic in any direction. Note this move may not be used to move enemy fighters off ledges, into dangerous terrain or any other part of the battlefield harmful to them.
~House of Shadows page 99
My gut says no, since you can only choose a facing as part of taking an action and this isn't the model taking an action. Therefore, you would move them, but they would remain facing however they were at the start of the move.
I know with a similarly themed power--mind control--you don't get to choose a facing before shooting and are limited to shooting what they can see.