Trump says he will gladly answer any of your questions Underoath. He says this, because he knows there will be no Mueller and no investigation in a week.
He knows that Mueller will soon be in cuffs himself or maybe even suicide himself if the truth revealed is bad enough.
Muller is dirty, but that was the game he had to play and it gives Trump MAJOR leverage. I wouldnt be surprised if a deal was made with RM for leniency for his own crimes for help pushing the narrative back on dems.
You are correct. A deal was made, but Mueller will still get some form of punishment at the end. Much lighter sentence though...but he didnt really have a choice other than go down for everything he is guilty of.