#931 IMHO Pientka filed Whistleblower status and came clean to the IG. He knew that it would soon become common knowledge what he had done. So part of the agreement was that they got him out of dodge. He knew his days were numbered staying in the criminal enterprise known formally as the Eff Bee Eye.
So he ran off to S.F. until he was dug up. Now he is probably someplace like the French Rivera.
Or the French Foreign Legion. :^D The thing is, as far as I know, we don't know that he did anything wrong... just go with Strzok to talk to Flynn. He surely wasn't hiding very well from DoJ in San Fran. Perhaps you are right, but if so, I would expect there is much more than just visiting the WH with Strzok.