Ashley will do what he always does, and come out on top. I am cynically believing he will let this club fail and get relegated, then sell it. He could sell the club for a "knockdown" £130m, essentially breaking even on his purchase, and restructure the loan so it exists at a low, one-time-only rate whereby he has vested interest in advertising, club shop, merchandise, etc.
In terms of what "fans" should do about it, first things first - stop considering yourself part of a collective that must swim together called "fans". You're a fan, singular, and a human being. This means the only one ultimately looking out for you is you. It also means you can think for yourself. in essence you should do precisely what you want and what is best for you, your loved ones and your bank balance, when it comes to NUFC. "We" can do fck all about real issues, like Poverty, crime, politicians, Non-Doms, privatisation of the NHS, over-crowding, low employment, higher cost of living, supermarket profits, capitalism, the stock exchange and the super-rich. What will "we" do to effect 90 minutes of football, once a week?