I'm not trying to doubt that you saw something...especially perhaps something strange or foreign in nature.
But I do have some questions about the story.
First of all, let me say that although I'm only 28 years old, I'd consider myself pretty familiar with Lapeer County and the surrounding area. This is due to the fact that I have lived in Lapeer County my whole life. Lapeer County is only a little over 20 Miles Wide (East to West). Its about 20-25 miles Long at best from North to South.
I've driven down every road in the county through my life. I do not know anywhere in the county where you could possible travel down..."15 miles of one-lane roads." You're basically saying that there is a two-track that goes through half of the county. How is this possible.
Again, not trying to doubt that you saw something "strange," I was just trying to figure out where you were?
Are you sure you were in Lapeer County? Even the state game areas are only a few miles wide.
If you were anywhere near Lum, Michigan...there are some strange breeds of deer in a few areas out there. About 15-20 years ago, there was a guy who supposedly released some fallow deer (or some kind of deer that was smaller and lighter colored than whitetails) out there that cross-bred with whitetails...I've heard this from numerous people who live in the area. They equate to a much smaller deer and are more lighter in color. Just a thought.
Also, could have possibly been a coyote with mange. They look very weird. I've shot a few with mange and you could barely see their tail because it had no hair on it. Also, it is possible that perhaps some outside factor (a small hill the creature was on, perhaps a low spot that you were in, or maybe even you were croutched down when you initially saw it) caused you to overestimate the height of the animal. Coyote tracks looks similiar to what you found. They do have clawmarks on the front two pads, but these may be harder to see in mud. Who knows? But I'd like to steer clear of that area.
Deerhunter24 (Chuck)