Is the sunk cost fallacy always a fallacy?

[Peelee]

Wait... You've got a sunk cost there, but no fallacy.

For Redcloak's actions to be a fallacy, he would need to have an option to return to what Right-eye was doing, yet choose to ignore that option because he doesn't want to admit he was wrong. In other words, Redcloak is only engaged in a fallacy if he can freely choose to stop doing what he's currently doing, yet does not choose this because of psychological reasons.

But my point is that Redcloak cannot, in fact, freely choose to stop doing what he's currently doing. It's not just his own mind that's keeping him stuck on his current path, there's also an Epic Lich in the way. Redcloak can't just quit, even if he wanted to.

I largely stay out of this thread, but no. Redcloak is very explicitly given this choice in Start of Darkness.