So I wrote something about my thoughts on this year's pre-Stanford election "scandal." This is mainly in response to the linked article. Note that I am not not a part of FLIP.

An Open Letter to the Formerly Anonymous Student

Dear Miguel,
I am not writing this to pile negativitiy upon your feelings, but I must warn that you may further feel put down by what I say. I write this as somebody who has, back in my Freshman year, disagreed with the clear majority opinion in one of my organizations, although for me it never quite went as far as it did for you.
Everything that has happened to you in the past week goes back to your first fear, the fear that your opinion would cause you to be ostracized. This fear led you to publish anonymously, and thus begin the chain of events.
Was your fear the result of not agreeing with the majority? If so, that fear was misplaced. Within FLIP's core, did you ever voice your opinion? Or did you assume that your opinion would put you in so much danger, you held your tongue? If the latter, that assumption was flawed. I doubt that the core members would simply hear, jeer, then cast you out after you had been with them so long. You say that "FLIP acted hypocritically and wrongly" when many of the members voiced their distaste with the Review's petition: why? Is it wrong that many of them happened to be of the same opinion to begin with, that the mere presence of a unequivocal majority opinion prevents any and all actual discussion?
It can only do so if there is nobody to challenge that opinion to begin with. But instead of bringing up your concern then and there, where it just might have been constructively addressed, you wrote an anonymous article and got called out for it by an individual I cannot see in the GroupMe. It appears that because they did not know who to talk to (hopefully for discussion rather than derision), they attempted to unmask you, because how can we have open dialogue if we are not even open about it?
On Opinions
No opinion is sacred. I shall not pretend that had you brought up your opinion in FLIP core, it would be geiven anywhere near equal weight as the majority opinion. And that is perfectly fine. I ask you here to recall Mill, if you have read On Liberty. Mill remarks how the truth may be held within opposing sides of an issue. But this does not mean that such is always the case. There may be a tendency among some discussions to "meet in the middle." But if most of the truth happens to be on one side of an issue, meeting in the middle only ensures that you have brought falsehood into the final answer. No, diversity of opinions is not a necessity. For an extreme example, I would not support having a diversity of opinions on the value of chattel slavery.
As for screening opinions for the endorsement process: there should be absolutely nothing wrong with this. Why would you endorse somebody who has a higher chance of voting against your interests?
The Stanford Review
As you may have found out by now, The Stanford Review is not exactly "universally praised." You mention that FLIP core members were hostile towards The Review - did you ever question why? The Review has a bit of an infamous history on this campus, for reasons that you may be able to ascertain by looking through The Review's archives. Examples that come to mind include the anti-MEChA campaign in 2003 and the racially charged article in Spring 2013 (which was taken down, edited, and put back up). The one that stays in my mind is the Constitutional Council suit against the Students of Color Coalition that sought to gain access to VSO records (The Stanford Review v. The Stanford Students of Color Coalition).
Given that your association with them is not entirely new, I doubt (without denying the possibility) that this is why you were kicked out of the GroupMe. But I will say that, especially after last year's election ended up causing an international incident (when it's in both the NYT and foreign papers, it counts), there is a reason they are cautious.
My Advice on a Next Step
If you do not want to break bonds, go to the next FLIP core meeting. Talk to them personally. Your article suggests that you have not yet met in person as of the beginning of this. Go do it. And now that you have owned your opinion, OWN IT. And do not expect that just because you have one, they will like to hear it.
Regards,
Eric Wilson

P.S. That thing I disagreed with? It was the Out of Occupied Palestine divestment campaign of 2013, and I was in Stanford NAACP. Even those directly affected didn't hate me when I told them to their faces that I was against it. Trust that your community might love you as much.