I love it. You only get so many chances to be a major league ball boy; when you do, you better take full advantage of that. If you crush your gig as the ball boy, nobody remembers it. Nobody. There's a MUCH better chance people remember your performance as the ball boy if you make a mistake like that.
But as much as you'll be able to cherish the time you threw the ball into the stands while it was still live, you'll always remember the stance that the right fielder took. That's a disappointed stance and our beloved ball boy wont soon forget it, nor should he.