Just took some advice last night from a guy who often shoots high score at the 3-D hunter stakes. I had always held my hand wide open to prevent pulling the bow after release. Last night he suggested that I cup the grip by lightly placing the very tips of my fingers on the front of it. My shooting improved almost instantly and I felt as though I was better able to control the pin movement across the target. The "vee" in my hand provided more of a basin for the rest to sit in while having the tips of my fingers resting on the front of the grip made it hard to grab even if my subconcious wanted to. It seemed like such a simple, subtle change, but it worked great. Maybe it'll work for you as well since target panic seems to be a function of not having total control.

Fritz