My dog was in hunter mode again this morning. He growled at someone. I heard him and rushed over. This time, instead of trying to grab him forcefully, I tried distracting him from hunter mode to pet mode again. So, I took out a treat. It must have done something to him, because even though he didn't take it (normally he would be all over that, being a beagle and all) he didn't growl at me. Then, I told him his favorite phrase "Good job, boy!" which he loves to hear. I touched him, he flinched, but did nothing else. I pet him until he lost the tension in his muscles.
The last step would be to pick him and and take him away from the situation, but I was scared. Last time, he growled at me and it made me feel very sad and rejected. I don't want to ever feel that way again, but I know I need to have the courage to drive this home.
In the end, my friend came up and grabbed him for me again. He immediately returned to pet mode, turned all his attention to me, and did all the tricks in the book to get the treat that had remained in my hand this whole time.
Progress! From start to finish, he did not growl at me! In fact, he was even inching away from the other animals location on his own! Now, if only I was as fearless as my friend (-__-")