From one episode to another, things on this show are never what they appear to be. They change so often, it could be seen as a whiplash effect on the show's plotlines. Thankfully, the show is so layered and the characters so rich that it can compensate for anything that could be considered strange.
The deepening of the “Grimm” mythos continues with this episode, as the writers really start pulling the threads together. I think we received more background on the Grimms and the organization of the Wesen culture than we’ve seen all season, and it goes a long way towards explaining why Nick is seen as something of a maverick among his people.