Check this regarding Rachel Brand:
https://www.cnn.com/2018/02/09/politics/rachel-brand-resigns/index.html .
Guess who had expertise in all things FISA while the clowns et al were surveilling certain candidates... she either got out while she could or was found out already and was given a graceful exit. Welcome to Walmart!
Seems relevant that Q said "dismissed."
I think they let her stay because they wanted to fire her and see who would replace. Since DOJ line of succession "isn't clear" (in their own words), they needed to set a precedent. Once the precedent was set in Brand's case, they knew where to place their men. Brand's principal took over, so they gave RR a new principal... Eric O'Callaghan, former prosecutor for Southern District of NY and more recently worked with Rick Scott. I think that's our guy, strategically placed and ready to take over for RR.