So according to the rumors I've heard, a few of TV-Nihon's subbing staff have quit. No idea who specifically left, or the reasons why they left, but it looks like it's serious enough that TVN has started a recruitment drive for new staff.
I DO know that the people that left played big roles in subbing Gekiranger, which could explain why last week's ep still hasn't been released. Looks like the days of subbing the shows within the same week is behind us now (though to be honest, I was surprised that they were able to keep that up for this long).
Best of luck to TVN in their efforts to rebuild.