It does sound like a Dog Whisperer problem!
I had the same trouble with my scottie/cairn terrier, Halo. He would get so excited and his nose was in overdrive. His nose was smelling so many things that he wanted to get to all of those smells at the same time. He is not as bad anymore, but I still have to remind him who's boss. I keep him close to me at the beginning of the walk and if he is behaving, then I let him roam a little further from my side. When he acts up, I bring him to my side and stand there until he calms down. There are times I may have to stand in the same position for 5 minutes. I can't let him think he is controlling the walk. It took a long time before he calmed down. I am still working with him on a daily basis.
I take Halo for 3 to 4 walks a day. It may depend on how many walks you are taking and that is why he is so excited. I hope this helped. I know I had to have patience and make the time to correct his excitement. Good Luck!
