Try this; maybe you already have.

You start to give him attention. The MOMENT he starts getting wound up and excited, you stop. Just do not move, do NOT look at him, breathe slowly and calmly, and wait. May take 3 or 5 minutes the first time, but when you stop responding he will HAVE to slow down as well. (Won't he??? LOL) Just stand there in a calm comfortable pose, looking anywhere but at him. It will take time for you to figure out what is the FIRST indication he is getting excited. Is it an ear movement? A head tip? A front paw that lifts as he gets ready to bound and bounce? Once you figure that out, the instant you see that signal you stop midstep and WAIT. Once he slows down and wonders what to do next, you calmly say, "Good boy, Brutus." Not an excited, "Good BOY, Brutus!" Give him a small pet and WALK AWAY. Until next time.

It will take some time but this may help. The hardest part is finding that initial cue that he is ready to rock! Good luck.