"Putting the thumb on the scales" is itself a violation of the DNC's own charter, under which they are obligated to treat every Democratic candidate for president with impartiality and evenhandedness. There was a massive amount of coordination with the Hillary campaign, anti-Bernie stories were crafted and distributed from inside the DNC, and planting audience questions designed to undermine him was floated as an idea (even if it was never acted upon, that's an egregious misuse of DNC resources and an egregious breach of the charter). You don't have to hack a voting machine to "corrupt" the democratic process, you just have to violate the terms of your own party's charter.
I also wonder why you think the fact that DWS scheduled debates for low-visibility nights in order to help Hillary is so "obvious". I mean, maybe to us, but a few months ago bringing that up would get you labeled as a conspiracy theorist. It probably would even now.
And just one last thing -- on Symone Sanders. What else is she going to say? That they got cheated? She was the press secretary. If she wants any kind of future in politics she's going to take a graceful L.