Well i just press and release the button then move from the default position with my trackir to the the new position i want and hit RALT + KP0.
I don't understand how you can use Toggle snap view to configure your views. On my screen toggle snap view moves to a static view of snap view KP0 (trackir doesn't work in this static view).
If i try to press any other snap view button KP1-KP9 in this mode it will snap to that view and then back to the default trackir enabled view. So there is no way for me to go to and from a static view of snap view KP1-KP9 with trackir enabled and then overwrite the last pressed snap view with RALT + KP0