The context you need to share isn't that there exists a document that you wanted to sign and that they knew existed before you made the threats, the context you need to share (Edit: in court, you should really shut up here for your own good) is context that makes those texts not look like threats to drag their name through the mud in a massive smear campaign if they didn't agree to sign.
No one here is disputing that you might have been in the right until September. It's your actions in September that you need to account for.