If there is nowhere to displace the dirt, it is more difficult to dig this hole. If there is no way of knowing up from down or left from backwards, then escape seems impossible. Its senses shouldn’t pick up this weak a gravity. Still, maybe one should poison the atmosphere, to be safe. Not that poison kills it, but it would buy us time. If we rearrange the stars it cannot remember its way home, and so we should be safe. There are no extra containment procedures. This is our best shot. I give it two galactic twirls, not more.