The risk represented by Robert Mueller is not connected to or about anything surrounding a Russian Conspiracy; the legal risk is within ‘the leaking‘ of classified intelligence information to undermine the administration, and the potentially illegal ‘unmasking‘.
If we avoid all the shiny things, ignore the shell game and reset our frame of reference to the only illegal activity currently known, the leaking; the fog lifts and the main thing visible is the illegal leaking of classified intelligence information.
Despite his earnest efforts, there is clear and mounting evidence that former FBI Director James Comey was the primary source of leaked information to the media.

THAT reality is the legal risk to former FBI Director James Comey. That current risk explains everything James Comey has recently done, said and advanced.
If the evidence of James Comey being the source of multiple FBI leaks reaches the primary artery of investigative sunlight, who inside that investigative and prosecutorial decision making process becomes the risk? Answer that question and you discover the angle Comey is playing to cut off their ability to hold him accountable.
Special Counsel Robert Mueller, Attorney General Jeff Sessions, Asst AG Rod Rosenstein et al are the people Comey needs to worry about, isolate and control. It is not coincidental that Comey is setting up the future action of these participants to be politically motivated.


