There's only one good solution, which I've already mentioned a few times.
Abandon those online releases already and finish the BW2 arc straight-to-tankobon. Such things have happened before, it's not that they can't.
Really, it'd be better for everyone. This way, they won't have to keep to any deadlines, just release the tankobon when it's ready. And after that, they can quickly move on to XY and later arces. Also, the fact that they're drawing chapters just to release them for free probably isn't encouraging them to work... So, I really don't know why they're sticking to those online releases so religiously.
The way they're doing it now, this manga will be stuck in the fifth generation forever.