Maybe it would help Songdragon feel better about using that FP to swing the vote to Follow Only (which is how I interpret your vote)?
I don't know about Dr Simon (though I imagine he feels the same), but I would just like to specify that I am fully conscious that this is a game and I'm here to enjoy myself, i.e. my ego/self-worth/deep feelings are *not* deeply invested in this single decision. The FP mechanism has been put in place so that, if a player feels strongly enough about a course of action, then the strength of that feeling can be weighted against the (perhaps only lukewarm) preferences of the majority (who can then evaluate how strongly they feel about their own votes and decide whether or not to invest their own FP to reflect the strength of *their* conviction). i.e. it's a weighted average mechanism, nothing more. If you don't feel strongly enough about the matter to loose one more FP and (probably the bigger factor here, though I'm just guessing) risk the *possibility* of ruffling some feathers, then the system says your preference doesn't, in fact, outweight the preference of the majority. There's no need to make it any more complicated than that, or try to (counter-productively, IMHO) mind-read the other's possible reactions/degree of comitment beforehand. Let's just assume by default that we're all adults that remember they're playing a game and deal with any ruffled feelings if and when they arise.
That said, I *am* (strongly) invested in telling a good, realistic story, and that (strongly) requires all characters involved take actions that make in story sense. At this point, after all the IC arguments, if Songdragon uses that FP, it would make *no* sense for Sloor and Darius to just meekly change their mind on a dime, so I think something would need to happen to make them realize the strength of Mir's objection. Let's use this disagreement, not as a hurdle to be overcome, but as an opportunity to say something about Mir as a person, as an opportunity to deepen our shared story (and what is said is of course ultimately up to SD, just brainstorming here).
Mir leaving might be one way, though I think it unlikely it would change their minds, and it's not something that I would have thought would be IC for Mir (though temper will tell, and she can always regret/try to correct/burry it deep/shrug it off afterwards, of course, which will all tell us something about her). I think we can all agree though that in a purely OOC way, putting *a player* on the sideline is a less than desirable outcome all around unless the downtime is specifically what's desired (i.e. OOC reasons affecting IC behavior rather than the reverse). Another way might be if Mir felt trapped between the danger she sees coming (for her, her teamates and their mission as a whole), her frustration at not being able to make them see it and, at the same time, her need to protect them from it, precluding her outright withdrawal from the situation? That could lead to a variety of actions on her part (Simmering Resentment being the less interresting and most destructive possiblity IMHO), but considering her powers are mind/influence based and that SD herself mentionned the temptation of it, for-their-own-good Power Abuse might be a realistic, gut-of-the-moment reaction to the situation. It doesn't even need to succeed (or she can immediatly reverse it if it does), but it would be one heck of a cold bath (for Sloor at least), to see that she's willing to go that far. *Now* changing course could make perfect IC sense... What do you guys think? Anything spark your imagination in there SD?