I didn't see any prints and couldn't make out any even when it went up and over a blow down. The slide headed towards a massive beaver pond.
I've seen trails like this on a hill before. They went from a boulder field to a hemlock grove so I assumed they were porcupine. The length of these sent me to the books and came up with otter, but why would an otter get that far away from water?
Could be a beaver. That looks like a beaver tail drag. They don't hibernate, and sometimes get about in a warmer spell. Don't know where you live and how harsh it is there though. How high was the windthrow? Second year young get a hard time from the adults and split. Maybe things got bad for one rebellious young buck beaver. Usually they bail in the spring. But.....
Dispersing young beavers can and will do a half mile easily. At least here they do. I live in mountains, and new colonies often are at the end of an elevation change that 99% of the human population will decline on a day hike: down one fork and up another, or over the point in some cases. There are no other routes. Our beaver works lie in the relatively level heads of high valleys. Major tributaries usually join below that elevation, so to get to another suitable drainage they must go down and then up again, or they must go over the point between. Somewhere in my mental archive is a note about a beaver cutting in an odd upland location, but right now I don't have any more on the incident than this.
What might be unusual in your case is the time of year. But the book on beavers has not been completed. Or at least I haven't read the latest edition.
I've heard of snapping turtles in the uplands going from one creek to another or dropping eggs well away from one. You'd never guess that they'd get so high up such little streams and then haul out. So far from the kind of place where you'd usually put them.
If the trail is going into a beaver pond, chances are good it's from a beaver, I'd guess. A dragging beaver tail could also wipe out the footprints. Beavers learned this footprint-obliterating survival trick around 1720 from Chingachgook.
Looks like a beaver, sounds like a beaver, smells like beaver........
In my own earlier post I said that beavers travel down and upstream to reach good sites for new colonies. What I did not say was that below the headwater valleys here the streams are so steep, fast, shallow, small and rocky that movement might mean a lot of overland going, at least some of it well away from the water because the ravines get so narrow and steep sided, with plenty of high ledges.
I went out today to check the lower section of the track, they stop at the bottom of the 1st pic with the dogs and then the actual track of the animal are wiped out by mine and the dogs tracks. I searched between the end of the track and the beaver dams and found no more slides or tracks of the 3 possible animals. I walked all down into the beaver dams and found the same slides over the dams most of these had tracks in them from animals returning up over the dams.
On the way home I saw Porcupine tracks down a steep hill. The tracks were in both directions but didn't look any thing like the ones in the picture.
I guess I'm going to have to spend more time up on the hill.