Yeah, you can control them, but athletes don't play like that. It's just like the Dez no catch. Yeah, Dez should have just caught the ball and gotten out of bounds. But Dez is not thinking about that. Similarly, Murray is thinking about breaking open. He's not thinking about "don't fumble, don't fumble," and he shouldn't be. And even if we think he should run with the ball tucked against his chest, that may hamper his mobility. As for the 3rd and 1 situation, the ball comes in "hot" and Romo just bobbles it. Things like that happen.
You simply can't play a perfect game, and the other team's guys are trying to make plays too.
I'm disappointed, but I'm not going to fault Romo or Murray. Yes, the turnover was huge. But those things happen. We just couldn't overcome it, and the Packers could, which is why they're playing and will get crushed next week.