Maybe the Russian hackers aren’t under Putin’s control any more than us hackers are under Obama’s control...and maybe, just maybe, those Russian hackers don’t wish to see World War 3 in their lifetimes and view Donald Trump as a much more sane and level-headed president then Clinton?
Or, more likely, this is sheer desperation on the part of Hillary’s campaign.
I think the most likely scenario is that the hackers have seen the totality of Clinton’s emails, and realize that she is a crook. Hackers like this like to feel they are righting wrongs, and believe releasing the info to the public is the way to do this. I hope they are correct.