Like all of you, it pains me to see what the club is going through. It's obvious that Ivan has lost the playing group. So the way forward is either get rid of him (and Nathan), or have a mass clear out of players. As neither of these is an option, as we have seen in the past with Luke Lewis and co., I believe that some hard decisions have to be made.
As it's not financially viable to sack Ivan at this time, maybe he could be given a role of Head Coach, Director of Football (call it what you like) and another assistant coach employed (Jason Taylor, Neil Henry or Cartwright) whoever is available, but someone who can motivate these guys and get them to train and get their minds back on the job of playing football.
I don't think Cleary reading them the riot act will work because there will always be the nepotism issue, but with him being one removed from direct contact with the team, we could perhaps work around it. This might also help Nathan because it surely can't be good for him trying to perform in this toxic environment.
My thoughts anyway, and hope we jag a win soon. Cheers.