Oh bullshit. The game isn't scripted. I've proven that on here with someone who said it was. If it's so scripted, upload your save from right before that game. I'll bet that the first person to try will win the game.
That's exactly why you should open a thread. If you're looking for answers, you can get them. It would depend on his role, his teamwork attribute, your philosophy and any possible TIs, PIs or PPMs that could affect it.
It's not hard to fix yourself. The DC has to push up to engage the ball-carrier if no-one is properly screening the defence. Either narrow the distance between Midfield and Defence or play with a DM.
If it only happens to you, and not to your opposition, it's obviously your tactics.
Mate, you can watch footie all day, it doesn't change the facts. Instead of a rant on here, create a thread and ask? It's a lot more productive and you'll be able to sort out your problems in no time. They are stepping up because of a lack of defensive cover in midfield and they're adhering to your instructions probably as well. There are plenty of ways to reduce this, but you'd need to post your setup.
I agree with you man. CBs are always taught to jockey and not dive in when the opposition is attacking. To make the attacker decide how he is going to beat you. By stepping up this simply allows him to pick his pass and you're done. CBs should always divert back to goal and delay the attacker for as long as possible. A good example is David Luiz. Always charging up the pitch diving into tackles and gets caught out of position. Look how he's criticized for it.