(1) That isn't what happened. The junior associate wanted severance because the named partner represented him.
(2) I would fire any junior attorney who said such a thing. You may think it's acceptable; I do not. Everyone deserves an attorney, not just even when accused of heinous crimes, but especially when accused of heinous crimes. Prejudging a client or potential client based solely on the allegation and news media is antithetical to everything the profession stands for.