Special prosecutor Hank Brennan may have dulled the impact of inappropriate text messages the lead homicide detective sent regarding Karen Read days before she was charged with the murder of John O'Keefe – but they're still damaging to the state's case and not just because he used vulgar and obscene language, experts say.The texts were a bomb that blew up the first trial when they were read with Michael Proctor on the witness stand, and it ended with a deadlocked jury last year. This time around, prosecutors decided not to call him as a witness, and it was his childhood