A squirrel moving around at 2 in the morning is usually a dead squirrel. I have never seen one move after dark in MN. Never had one on camera either after dark??
It's kind of a long walk, but I could measure up distance sometime in the future....I hope it is a squirrel and not a cougar...that would be bad. Cougar was sighted in that area before.
Not trying to yank your chain or sound like the DNR. Just that sometimes things up close on these cams get distorted and look larger than they are. Having something to compare the size to would help eliminate things.
My guess would be feral house cat or bobcat. If you look at the size of the leaves both in front and behind the animal and compare to animal it isn't that big.