I went through the exact same situation. My best advice, if I were to do it over again, is to wait, and then wait some more in proceeding with the annulment. This is not the first time your Tribunal has dealt with this situation, so your advocate will advise you on procedures that are meant to protect you, but there are not many. The point of the annulment investigation is to find out the truth, not to protect people from violent situations. And you will want them to find out the truth. The fear I had affected the outcome of the case, taking it in the wrong direction because I didn’t want to anger him and place grounds on him. The marriage was not declared null as a result. I started a new process with new witnesses and sturdier grounds this time. I am thinking more clearly and am in a better, healthier place in my life than I was at that time.
An immediate annulment procedure is very dangerous with the threat of your ex’s rage, and there really is no way to stop him from finding out. You will want these emotions to level out a bit. And if you intention is to start a new relationship immediately , take note that this is unhealthy. I felt the same need, as I found my identity, security and worth in my partner, and this is a common trait in abuse victims. You will not want to go into a new relationship with these same addictive needs. Statistics show that you will wind up with a new abuser, most likely a worse one. Seek counseling for yourself, first. Seek your worth in Christ, in working towards and achieving objective goals, and also in developing trust and respect with other female friendships. These are all things I am still working on, and they don’t happen overnight. It is a lifetime of self-defeating and blaming thinking habits that need to be changed, and it’s difficult, but you will get there. Rosaries help too.