Seems a very highly unlikely scenario. For an abundance of reasons, the biggest of which is they have no reason to do this. If you email that to Hillary though I am certain she will be happy to get it out there. It is also pretty obvious if Trump and/or whomever is backing him can choose...they want to run against Biden. They have been game planning that, they have the prep work done, Biden is their man. Sanders is the one guy Trump has said he does not want to run against. He'd take Warren or Buttigieg because he thinks they are weak but he has the best smear campaign ready to go against Biden. So, Uncle Joe is their preference and who they figure is the guy all the insider DNC Democrats want. 

I think the absolute worst thing about the Democrats right now is they are once against separating into factions, shooting themselves in whatever feet they have left and looking for a way to lose again to Trump. And Hillary is not running, I guess, but she is making sure she is out there big time spewing nonsense that will be fodder for Republican ads, and she knows this better than anyone, and intentionally trying to destroy whatever goodwill Democrats may have or earn.

At times it is harder to watch all this fucking nonsense than it is to watch that corrupt idiot Trump because when the Democrats start burning themselves to the ground all hope goes out the window.