TimS claimed that in a situation like that, CEV would do nothing, rather than impose the extrapolated will of the majority.

I agree with you in general, and want to further point out that there is no such thing as "doing nothing". If doing nothing tends to allow your friends to continue living (because they have the power to defend themselves in the status quo), that is favoring their values. If doing nothing tends to allow your friends to be killed (because they are a powerless, persecuted minority in the status quo) that is favoring the other people's values.