I can tell you exactly what happened on that goal. You got up on the wrong foot. You are to your right, puck goes to your left, meaning you have to go to your left. But you get up on your left foot, meaning you can only go to your right. Then you know you want to go to your left and start to push as you are still getting up, that's why you have that stumble - your left skate is perpendicular to the way you want to go, so the push tips you over it and you lose your balance. Then by the time you are up and stable, you're way late and off angle. So you just throw yourself over in desperation because you think the shot is coming. But it doesn't come right away and you're off angle for an easy goal. So it's a chain reaction of things happening quickly that were all caused by something as simple as using the wrong foot to get up. You always, always want to get to your feet using the leg opposite the direction you want to move.