Thanks for the pic and gif, pani. CatherineC posted a link to practice photos and one of them captures the same moment in your pic but shows their entire bodies. I love that they manage to dance while maintaining deep and sure edges. Look at Tessa on a left back outside edge and Scott of a right forward outside. Their upper bodies are so calm and their positions completely controlled.
For me, this is easily the best SD i have seen this year. It is so difficult and makes full use of the steps and overall styles of foxtrot and quickstep.