I know minimal about tree torque. How to handle this? If you start at the top taking off weight - danger of spring back? If you start at the bottom, get a bar in the face if sod returns to mother earth?
Cut it at the base.....knowing the roots are going drop back. Stand back, keep solid footing. I would suggest a very slight undercut to prevent some peeling. If not comfortable, maybe pass just to be safe.
I would start disassembling the crown first, that way you will have less cutting of limbs under pressure and you will reach a point, maybe half way into the trunk where enough weight is off and the trunk will slow roll back up.
I don't want the tree to stand back up, then you have to notch it and drop it again. Cut the compression side first. (Notch the bottom) Then cut from top (tension side)
I would start at the top limbing and cutting small keeping an eye on it as Chud stated. If it does, fell it like any other tree, if it doesnt go vertical your saw stays out of the dirt. What is the DBH dougand3 ? Tree doesnt look that big.
As long as you are careful, you should be fine. The tree will fall straight down and the root ball will end up very close to where it started. Leaners are far worse in my mind as they barber chair. This may slightly, which is why your entire body should not be over the top.
This is exactly what I did for a big red oak. Worked just as described, much safer than cutting the base right off.
I know a guy who does this. The trouble is he even does it with a skill saw or any saw he uses. Then he can't go straight. I tried talking to him but no good.