Or perhaps you're being just a tad to particular, based on how you would have done it?Because it plays like fan fiction.
I'd rather it actually make sense within the context of the story being told up to that point. Instead of getting a one episode infodump about something that hadn't been in play up to that point. Then, SURPRISE!!!
After a season-and-a-half, these guys still don't seem to know how to set up or execute a season arc.
(which you didn't)
Seems a nice twist to me, I prefer the Mom, to the RA being Michael.
(which was waaay to obvious and fanwanky IMO)
It would also have given the detractors another tidbit of "Mary sue" incitement to complain about.