Eh. It's going to be a big failure. It's definitely not the right timing for such thing. I mean a video is not coming any time soon and the song hasn't even been sent officially to radio.
it could help. i mean @ first only fans will download it, get it back on the top 100 of iTunes, others will begin to notice it. Radio will catch the idea of playing it, and before you know it it'll begin to grow.