That is a "5 cut reverse Humboldt" with a twist. I use it commonly when falling trees uphill against the lean and into the wind. In the old days, pre-CB radios, scientists often used this stump to explain their global stump migration theory. Because this is the preferred technique in falling fairy rings (second growth redwood) with the sloping cut facing to the inside of the ring it sees quite a bit of use here in Santa Cruz. Yours is a small tree to use the 5CRH on. A 4' DBH stump with a small cross erected about 15' away is common with the 5CRH.
The twist part comes in by wrapping a rope several times around the trunk, then the hinge is cut through quickly and the rope pulled hard. The tree when it twists will be accelerated by the cornholiess force and will always spin clockwise and move backwards around the stump. It then will fall nice as pie away from the sloping cut. Simple eh?