Coat pork with 1 tsp mustard & pepper. Heat canola in saute pan over medium high heat & add pork. Brown pork on both sides, about 1 - 2 minutes per side. Remove pork from pan & set aside. Reduce heat to medium. Add the vinegar, honey, remaining mustard & sage to the pan. Scrape up any bits on the bottom of the pant with a wooden spoon to combine sauce & let it reduce slightly.
Heat olive oil in seperatepan over medium low heat. Add garlic & cook 2 - 3 minutes. Turn heat up to medium & add green beans. Cook for 4 - 5 minutes until hot but still crisp & season with pepper. Serve pork with sauce, brown rice & green beans.