Yeah, that is the one thing that seems to get reported, but I think there must be more driving the big change in play.
The players didn't seem to enjoy playing the game together under Brown for some reason. It seemed labored, really. Whether it was Brown's practices, they didn't trust his play calling / rotations or they just no longer bought in to what he was selling, he clearly lost the locker room.
What Doug brought in was a sense of energy and creating a "family" on this team and the team has bought in big time. That is the reason I would prefer they keep the core 7 that are playing big minutes intact (Fox, Domas, DDR, Keegan, Monk, Keon and Carter) past the deadline and see what kind of run they can put together. Add some depth at the deadline, but don't disrupt the chemistry. No need to make a big splash or rash changes right now, let it simmer and see what we have cooking.