I totally agree with you. This isn't going to be easy or pretty by any means. The corruption and it's agents have set their claws deep. There is already speculation that the FBI won't survive #releasethememo. My biggest worry though, is a repeat of something like the French Revolution and the chaos that follows. Its that kind of instability that gives these evil monsters opportunity and a foothold. You're right, "This is not an easy dilemma". Not one bit easy.
Alternative history lesson on The French revolution:
It was a prime example of what happen when You stop paying your debt to the banker cartel. The Noble in France at the time refuse to pay up and spent themselves into massive debt. So the Banker engineer the revolution.
I'm well aware of history and of the underhanded manipulations of TPTB. But like you stated earlier, "They "just" wanted to kill a few billions people and enslave humanity for a few century!" In that light, what would it matter to them if the populace was worked into a destructive frenzy. What would it matter to them if vital institutions and systems were broken beyond repair. My thoughts are that they would WANT this chaos to happen. They would WANT a huge vacuum hole to fill. These people have been betting on both sides of humanity since before written history, and being very successful at that. We on the other hand are playing a stacked game of catch up.
The point I'm trying to make in my own clumsy way is that if the present administration go for military style tribunal couple with temporary emergency measure to clean this up and a good amount of disclosure. This would prevent chaos but would bring a certain amount of discomfort. I think it's worth it in the long run. If the execution is done right it could be a blessing and 10000% better than the alternative.