It cracks me up that people think this is a coaching issue. How exactly is a coach supposed to say "Don't go until we snap the ball" differently? LOL
False starts result from a lack of ability and confidence.
When you feel like you have to get out of your stance as fast as possible to have the slightest chance to block the guy in front of you, you're antsy. When you know you can block the guy in front of you, you're solid.
Our guys jump because largely because they know they're overmatched.