While BBK's financial perfomance is nothing to write home about, Adan's actions in helping net one of the NSE's large criminals is nothing but commendable. Gavakiah was probably trying to be too clever by moving customer's money into his own account. He forgets that in countries with strong money-laundering and know-your-customer laws, a bank can become liable if it has not taken appropriate action against such occurrences. The case will hopefully prove that you can eat, but not at NSE investors' expense.
So far, Stella Kilonzo looks to be doing a good enough job and it'd be disappointing if Kimunya didn't for once do the right thing and appoint her to the job fully.