I wasn't surprised when their scores dropped either. I was, however, surprised that they were initially so high, since the flaws were not invisible in real time.
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I don't think the Twizzles accounted for the big drop in the TES at all. Perhaps the twizzles were not their best but they still got a Level 4 and all + GOEs. I am pretty certain that at least a couple of points were lost on review of the circular footwork. I try not to pay that much attention to the TES ticker, but did notice that after the first element, Circular Footwork, they had 10+ points. That says to me it was called a Level 4 and then changed to a Level 3 upon review. Other than that they got a Level 3 on the Diagonal footwork and Level 4 on all other elements. I also wonder if the same thing happened with the Diagonal Footwork. At any rate, I am convinced that the reduction in TES was probably based on issues that were imperceptible to the naked eye. That said, my hat's off to Weaver and Poje. Great FD and well deserved Silver medal!