Sounds like Hubby's radar is working on at least some level. What a horrible stroke of interference, and how it does smack of power and control! Sqrlb8 gives him two thumbs down. (and then pauses to lament the lack of opposing thumbs on sqrls)
You might like the support you find in a battered women's group. Sadly, but fortunately nevertheless, they are everywhere. I suggest this only because hubby in this case isn't simply a passive doof. No, he's reaching into your life, and crossing rather sacred boundaries, and this just as the scent of you leaving takes to the air. As bad as this is going to get between the two of you, is going to be during the leaving. That is when women who get hurt by abusors are at the most risk. I'm not wanting to alarm you, I'm wanting you to be armed with the knowledge of what you face. The good news is there isn't an original abuser out there, these guys are as though cloned. Everything they do, say, when they lash out, it's scary how they are all the same. His stunt with your T scares me that little bit for you. Information is power; be sure you are well supplied with it.
Good Luck to you, your new life awaits. Just get to it safely.