Lol, I am out of practice, but not "THAT" out of practice :-P
Deselect both, Select 1, throttle 0, Ignition, deselect 1, select 2, throttle 0, ignition, deselect 2.
Now with both engines running, I have 2 choices, toggle all engines, or select all engines.
Yet at the moment, the Mossie swings violently to the right. Very confusing.
I am wondering if HSFX is causing my woes. Oh well, it doesn't impact my current career, although I often wish they would let me take a Mossie, instead of this Buffalo

Still, horid thing has brought me home on 10 sorties so far, very few of which I would have survived in a wooden crate.
Edit.
I should point out the violence of the spin is well beyond "torques" expected effects. I feel like I am indeed running full power to 1 engine as you say, but I should not be, as I selected/toggled both.