This is not the chipotle barbacoa recipe! The recipe is from an episode of Melting Pot on the Food Network, and is posted to that channel's website. Whoever started spreading it simply substituted a beef roast for the lamb shoulder or goat originally featured in the recipe. Here is the URL for that recipe: http://www.foodnetwork.com/food/recipes/recipe/0,,FOOD_9936_12807,00.html

Whatever its quality, this recipe has nothing to do with Chipotle's actual barbacoa recipe, nor "Chef Kent Chambless." It is properly attributed to Aaron Sanchez. Note the conspicuous lack of chipotle adobo anywhere in the instructions, a prominent feature of the real thing.