Ok, so, you're in that little mount thing where the yo-yo hits the top sting and bounces down on the bottom sting. Then what you do is pop the yo-yo out of that mount away from you. The yo-yo should be hanging as if you are about to go to a double-or-nothing or a 1 1/2 mount. Then you take both of your hands and bring them away from you. What you are going to do is get the bottom string and make it go over the yo-yo, around, and then hook it on the bottom of the yo-yo on the other side. You should end up in a mount similar to what you started with except with a twist on the string that's attached to the yo-yo. After figuring out what's going on, try doing it in one fluent motion.
Well, that's it. I hope this wasn't too confusing.
EDIT: Here's the video.http://www.youtube.com/v/7dx4fMWzchM&rel=0