Thanks for the comments everyone!
Originally we started Cappella in a running not only because he was tossing his head, but also to help keep any hand jerks from me to more of a minimum. He jumps quite a big bigger and rounder than my last horse, so it was an adjustment. Anymore I normally take it off for practice and stadium. But like Jumanji said, for hunts and hunter paces he gets way pumped and high headed again.
I do actually have keepers on both bridles, they are just pushed closer to his nose than is probably good. You can see the little pointy parts of them sticking up. I know martingales are one of those controversial pieces of equipment sometimes, but its what my trainer suggested.
I think Gymnastics are a great plan for him for the winter. We are also going to work on coming in straight and stop the wiggles! At our event last week he came into two of the stadium jumps like a worm! I actually just ordered Jimmy Woffard's book on gymnastics, so hopefully that gives us some good exercises. I always look forward to winter again so we can get all teh major work done before show season starts back up again.