Man, you guys are going to be disappointed when Trump is exonerated.
And angry when Mueller ends up in jail in his place.
Even if Trump is exonerated, why on earth would you expect Mueller to end up in jail?
Leaking aspects of the investigation to the press.
Everything I've read and heard is that Mueller and his team have been on lockdown when it has come to communicating with the media/leaks. Most of the information the media has gotten about the investigation have come about some time after the fact (often times months) and from the folks that have come in contact with the investigation, not the investigators themselves.
Some of it may well have come from Manafort's lawyers tbh; actually that seems the most likely source for at least some of these leaks.