A reliable source has told me:
A short stretch of the Red trail has been impacted by one snowmobile. It entered the trail from Access Road #20 and exited 500 metres later at the northernmost hydro line. The damaged section is still very skiable. The classic track beyond it to the end of the trail is as good as the track from the start of the trail to the damaged section.
Also on the Red trail, two or three of the steeper downhills are hardpacked and require caution.