Last night on Watch What Happens, Denise Richards really opened up about ex-husband Charlie Sheen saying that she believes that the path he's going down right now is "sad." It was the first time she spoke so frankly about Sheen since he first went on his "winning" streak. Perhaps it has to do with the fact that he's reportedly been bashing her in his live show after she took custody of his neglected dogs, one of whom died from malnutrition after being in his care.