Well, just for saying: Fractal is liking his part since he is "in character": he is playing dr. Frankestein or something of the like.
He really does not like hurting people, but Erik annoyed him. That's why he allowed himself to hurt him a little. About the psychological stress, he is just into it since he knows Erik will not remember anything after smoking a Laes.
Well, Fractal is just loving the idea of being a Monster without long term effects. He loves acting.
You are right, Sichr, I will wait on the others; Fractal next action would just call out loud that their victim is out of his mind, and as so, of no use, and tell some of the others to shoot the man in the head. But I will wait. Anyway, we got a lot of interesting information, and the things we are trying to get now can be useful, but may also be not so crucial.
Sen, can I assume that he gave his login and password to his account on his commlink?