BA alert.
The face cut was very clean and nicely executed. It was way too deep, however, especially for a yard tree. Once "you" put in that face, that tree was going to follow gravity. If the faller had misjudged the lean, it could have easily gone over backwards. Having the back cut sloping down at that angle generally hinders wedging, but in this case, it was more of a "strap release" than a back cut and wouldn't have mattered. In the woods, with a tree which has a clear lean, "steep and deep" is a time honored way to put trees on the ground. Not that deep, however.