Originally Posted by
InSoMnIaC
As someone already mentioned, in the highly unlikely event of having both switches physically stuck in one position, you would simply grab and hold the trim wheel which would disengage both pitch trim systems. Manual pitch trim would then be available via the trim wheel
I think you mistyped here and are defending single switch instead of "both switches?"
If so then yes that's one solution. But a far better one would be to not have the problem in the first place.