I kept mine moving. I didn't chase him with my arms flailing and a whip or anything, but I did not let him rest. If he trotted or ran from me, then the moment he stopped, I moved towards him again. He'd take off again and when he was tired, he came to me. It took about a week and about 1/2 each day, but now, he comes right to me, he might walk away a couple steps because he's lazy and doesnt want to work, but he stops. I've actually done that to two of my horses, a friend did it to her pony and it works. It really does.
"Be a best friend, tell the truth, and overuse I love you
Go to work, do your best, don't outsmart your common sense
Never let your prayin knees get lazy
And love like crazy"