With the removal of Dan Hamon as the show runner there is a lot of expectation on the new show runners to live up to the expectation of a limited US audience. It is likely that they've decided to remove it from the kill zone (friday night 8pm) and hold off until a window opens in another timeslot later to give it a better chance at survival.
NBC have spent a lot to try and make it a palitable show and many of their new shows are failing that would've been slated as replacing it but now poor viewing of new shows has given it a second chance maybe.