You can game out why an accused would not present their version, whether guilty or innocent in the situation where they are already publicly accused. i.e. this is not a situation where the person is merely a witness or person of interest to the inquiry. HCW has directly accused CB of murder, not in an on the record interview where CB has legal counsel, but in the court of public opinion.
Scenario 1: CB is guilty.
Only a clown would make a public statement without knowing the case against him, because he might say something police can disprove, or he might need to resort to silence.
Scenario 2: CB is innocent.
Only a clown would make a public statement without knowing the case against him, for multiple reasons.
First he could end up inadvertently saying something that police can attack in the trial, making him look guilty when he is in fact innocent. Especially this might happen where witnesses won't stack up for him, because they already said different things to police. This can happen where a witness is lying, confused, doesn't remember or is unreliable.
But especially CB does not know how he is actually incriminated right now. So he could invest in a big "alibi" that does nothing to rebut the police case - because for example the police case doesn't relate to 5A
Especially the audience of CB to get the case "closed" is the Judge and not HCW. If he has good answers to allegations, it is much better to save these for an official interview than to gift wrap them all for HCW now.
I continue to find elements of this case pure Kafka, especially the suggestion that an accused murderer should give up protections around the right to silence, to prove his innocence outside of court, when the prosecutor is keeping his evidence secret.
But especially I find is strange to imply that this somehow makes an accused look more guilty, or that it means he has a weak case. We just don't know what the case against CB is, or how he can answer it.