As Doris pointed out, they did appear to take some sort of PCS hit for skating skills and transitions.
The theory she relied on based on her recollection was incorrect as it has already been shown in post above. 5 of the 7 teams in Moscow have higher PE, CH and IN than their SS and TR. A 6th team could actually have been counted if we accept tie marks. So that makes almost the entirety of all the teams competing in Cup of Russia showing the same pattern. Therefore, it's impossible to determine whether any deductions have been taken.
Just because it was not their usual standard, does not mean it was not good or better than their competition. Part of being a strong competitor is shaking off errors in order to produce the effort you train for every day. They still had the highest GOE of any team and they won PCS by a very healthy margin. Was it perfect? No. As ImaginaryPogue summed it up, solid but scratchy at the start.
I am not sure how I feel about the results, it just gave an impression, rightfully or wrongfully, that there is really no need to compete, they could have won this competition by mail. I feel that Ice Dance, unlike Singles and Pairs Skating, should have more severe penalty for errors other than elements because falls are so rare. So whenever an error happens, it tends to get noticed and seems particularly glaring. Due to the dark past of Ice Dance when it almost got thrown out of the Olympics, I feel this kind of scratchy performance that still netted them comfortable lead over other good teams will not inspire more new fans to follow the sport or be regarded as trully one with real competition.