A Flynn Pardon won't shield tRump, Kushner, et. al.
Rest assured that in exchange for the plea pf guilty on lesser charges (than could have been brought against Flynn) the Special Prosecutor's Office locked down Flynn's testimony (under oath and on video) and secured evidence from him pertaining to possible crimes by others. If tRump Pardons Flynn, Flynn cannot attempt to withdraw that testimony or seek to protect that testimony by pleading the 5th Amendment.
tRump attorneys know this and have advised the Orange-is-tan. Thus we now see tRump starting to pivot on Flynn. Before it was poor Flynn, a nice guy. Now it is changing to Flynn convicted, sorry but no big deal ...he lied to Pence and therefore we had to get rid of him.....that liar.
Mueller has this Orangutan on the ropes.