There might be "strategy" for Nicole and even LA to keep the constant low vote getter. As long as he's in the bottom two, there is less of a chance for their act or other act to be in the bottom two. If you think about it, who would have been in the bottom two had Marcus been voted out last week? It could have been a real contenter.
Regardless, that was ridiculous of Nicole to do. I think there is talk that she will be replaced next year. I'm hoping it's true. She is a worthless judge and mentor. Josh is doing so well despite her, not because of her.