I doubt that they're actually going to leave Warner. They have them wrapped around their finger right now and they can do whatever they want. Promotion for most of the singles on LT were pathetic, but I still hear BID on the radio still to this day...actually, I did hear it on the radio today xD
Even when the album was early in its release, I would hear a whole ton of LT songs on the radio. RU was even on there once. Its just their recent singles that have been not performing well.