from what's been said by Clyne and Pulver, and the Force head honchos, in the last couple of days, the decision will be based on the least worst financial scenario, ie what will cost the ARU the lesser amount, being sued by the Force and it seems that will not result in money, just the injunction to stop the ARU taking the Force out of Super Rugby, or being sued by Imperium, which will actually cost real dollars.
The only hope for the Force, and it is a very real hope, is that Cox has had enough, may cut his losses and will take some money and run.
In theory, i suppose, if the Force raise sufficient capital, they may be able to buy out all ARU involvement, run the program themselves, thereby taking away the expense from the ARU, who could dump the Rebels and only have to fund three franchises.