If they truly have cleared him and haven't announced anything AND haven't visibly shifted the focus of the investigation (outward toward an abduction, for example), I'd be pretty upset if I were BM. Not that LE has to take the SO's feelings into account, but that does seem particularly awful to let someone twist in the wind like that, under the public's scrutiny, if you really have cleared him from suspicion (unless you have a prime suspect that you are closing in on and don't want to tip your hand).... but I certainly don't get that vibe from this case.