How Eric Gagne throws his changeup

Eric Gagne throws very hard. But what makes him successful is how he uses his fastball to set hitters up for his off-speed pitches. He throws a "vulcan changeup," and its worked well for him. See the grip in the picture. Here's how he throws his "vulcan changeup," according to a member of my baseball discussion forums.:

1. Keep up your fastball arm speed, otherwise you won't get the full splitter action as it comes to the plate.
2. Keep your wrist loose, again to get the full extent of the splitter movement.
3. Keep the "Circle" made by your thumb and pointer finger small. This one I figured out myself, it needs to be small and only hold onto the ball a little bit, so that the pitch comes out of your hand easily. Otherwise, you won't get the same action.

[Thx, FSTBLL THRWER]