Hard to say but I think he does troll Jin in this.
Look near the end; it looks like he was under mind control again like during the time the church was burnt down (Hazama took control of him then too.) Also in the beginning with Ragna.
It seems to be that in this story, Hazama is pretty unnerved to fall for Jin when he wanted to use him for a quickie/mind screw.
Story-wise it goes like this: When Hazama tries to wipe out Jin's memories(or something like that), it doesn't go quite right as now Jin thinks Hazama's his brother. Hazama decides to take advantage of this for a quickie. But when Jin calls him "Ragna", it breaks the mood entirely.
Then he decides to release Jin from mind control, and Jin wakes up to find himself screwing Hazama.