.
I use this methodology too, however, you don't need a saw or pruning shears. I simply place the tip of my knife, at the centre of the pelvis juncture & 2-3 taps of the back of the blade with a hatchet splits the pelvis, slight push on each inner ham & done.
Why not just whack it with the hatchet then?
The more I hunt the more I discover I need a lot less schit in my pack or pockets. I do use a Sagen saw sometimes, if I have it with me. But most of the time I just reach in and pull it out because I can cut it from the outside almost all the way around.