Escapes from front headlock was the topic for this class. We looked at both the sit out and the drag out. I mentioned that I prefer the sit out for when i can easily insert my head toward the armpit of the choking arm. However, if they drop that shoulder, or are otherwise keeping your head buried in their chest, the drag out become a better choice for me. Her is s decent recap of the sit out as I like to teach it.
The best Drag out video I could find is below. By best, I mean closest to how I understand the technique. This does, however, place more emphasis on speed than we did. I prefer to think of it as almost going to a Russian two on one, a bit slower, with tighter elbow control over the wrist. Have a look and see if you can spot the difference.