As he's become more educated, me too for that matter, he's much easier to redirect. Now that I can get him off his forehand, I can add leg. Just the other day I felt him sucking back a little, and my first reaction was to take my leg off. Just as suddenly, I thought to myself, "Uh-huh, mister. My leg is going on!" Now, he knows what a "frame" is, he knows how to carry himself, and he knows that I am going to push him forward into the bridle. And he can deal with it.
We're Not-So-Speedy Dressage for a reason.