My comment wasn't so much a direct response to the points you raised, and I wasn't disagreeing, the things I discussed were ideas which were inspired by your comment.
I hadn't considered whether I would advocate for another Snowden, but assuming being 'another Snowden' implies exposing corruption I would have to say that I would. I personally think that corruption in any form is one of the things holding us back as a species. See Africa for a wealth of examples.
Your question is of a moral nature: what should I do if I break in your house and find out that you are abusing your kids?
This is why they write fiction :) Not so easy to figure out, and it could easily vary by individual and circumstance.
As to advocating for people to become robbers, would I advocate for another Snowden to appear? I think that's impossible for me to answer without answering your moral question, without knowing what sorts of things would be revealed by the crime. Whether I advocated or not, though, it'd still be a crime. Not sure if my advocacy is a crime. If so, then I'm a criminal and the law is an ass.