I like the song and I like the video, but unlike Blabbermouth say, I find that it is not "genre-bending" (I'm thinking Seether-esque), and it's not hard rock and thus cannot challenge what people expect from that type of song. Also, they act as if no band has ever made a music video with a storyline. Blabbermouth are fucking dumb.
No it's about Corey Taylor's failed marriage. It's actually one of the best songs Slipknot has ever made in my opinion. I always thought Slipknot's softer and more down tempo songs were awesome.