So here's a cut for those who do watch TO and didn't watch the episode yet and don't want to be spoiled, here's the pertinent dialogue. Klaus said that he spoke with a certain Bennett witch in Mystic Falls and she basically said that the Other Side is disintegrating and that once it's gone for good, all of the other supernatural creatures over there will go poof!, bye-bye forever.
Oh, by the way, this is it. I'm done with The Originals after this episode. I keep trying, and the last two episodes were good, but I'm just so done with this Elijah/Hayley-nonsense (seriously? her almost dying is the most upset he's been in a thousand years?!?!?!) and the complete shatting-upon of the Elijah/Katherine backstory. And the Klaus-Marcel story is basically the opposite of everything I love about TVD. So yeah, I'm done, I just can't anymore.