I guess I'm saying, there are mainline Christian denominations where this would also be the case: Hitler would have to agree to be saved, and the ex-member would have to in some way renounce the faith, but the outcome is the same, right?

I'm not trying to make the point that there isn't pressure on people to stay in the church. I know nothing whatsoever about the LDS church. People that say there's pressure, I believe them. I'm just making a nerdy theological point about "Hitler-salvation" as a threshold.