I've never bought this spin.

Certainly Russia had a hand in getting the leaks to Wikileaks, and certainly because they had an obvious vested interest in the US electing Putin's sycophant Trump.

But I've never seen or heard of any specific evidence that any of it was "disinformation" - just the repeated unsubstantiated claim that it was. It appears to be exactly what it looks like - a detailed record of the DNC's overtly fraudulent maneuvering to torpedo the Sanders campaign in order to ensure the nomination of Clinton, or more precisely, to torpedo the campaign of a sincere progressive who would likely threaten the ongoing flow of big donor soft money in order to ensure the nomination of a transparently corrupt neo-lib who could be counted upon to serve establishment interests and keep the soft money flowing. And notably, early on that was how the DNC treated it themselves, even going so far as to issue a public apology to the Sanders campaign "for the inexcusable remarks made over email" that did not reflect the DNC's "steadfast commitment to neutrality during the nominating process."

So what it actually all boils down to was that the DNC really was acting in a manner contrary to the public good, driven by their own greed and corruption, and the fact that Russia had a hand in exposing that in order to serve their own interests doesn't alter that fact.

No matter how one slices it, the bulk of the blame for the whole thing rests squarely on the DNC. Yes - it served Russian interests to reveal the information, but had the DNC simply been operating in a legitimate, honest and neutral way, instead of self-servingly and dishonestly, there would've been nothing to reveal.