You don't even have to prematurely end the LD. Since you are already lucid, you can just pay attention and when you notice that it ended and you just laying there thinking it sux, just remember that you are still dreaming and bam, you are back in a LD. With or without any transitions like a WILD would have. But the whole proces is much shorter since you are already relaxed and more than half asleep. Which is the longest part of a WILD. And yup, it's a DEILD - dream exit initiated lucid dream.