Hi Rooney, I hope you can find a little peace for yourself this weekend. Obviously, you feel the emotional pressure about everything going on with your W. You feel indecisive about the next move to make......which I think most people here could empathize with your situation.
IMHO, you should do nothing this weekend but enjoy D9.
I've been quite regarding you moving back and reclaiming the MBR, but since you asked, I'll give my perspective. From the viewpoint of a WW, it has already been adequately describe, which is she will probably go batsh't crazy. I don't know her and don't know how physical she gets when she is irate, but I have read some wild stories of WW's reactions to being put out of the MBR. Your W thinks she has you by your b@lls, b/c she got you to leave the house, so she is not expecting to see you waltz back through the door.
Before you attempt to reclaim your home (much less the MBR), you need to have plenty of confidence in what you are doing and why you are doing it. You need to have a plan that goes further than just getting inside the house. She may huff & puff and may threaten to call the cops, etc. I've seen some WW's make false accusations about the H to the police, so you have to be very careful not to show any type of aggression toward her. If you attempt to move her things out of the MBR.....I think she'll see that action as aggressive. There's just something about the WW not wanting to give up that MBR! IDK how she'll react, but I've seen some WW's declare war on the H who took that sort of action. However, I don't know your W, I'm just saying what I have seen. Some H's have moved back home, without too much drama. I mean, the WW didn't like it, but beyond the expected huffing & blowing and some threats.....that was about it.
I don't want you having any illusions that moving back into the house will save your M. You won't lose it, due to moving back, either. I just want you to clearly understand that if you decide to go home, then do it from a standpoint of being the faithful husband.........whose W has deceived, lied, and cheated on him.
You can expect her to tell you that she had been considering reconciliation, but now you have ruined everything. It's just her way of lashing out.....but if that's the worst of it, you'll be lucky.
The main person to consider in all of this is D9. Will she witness a terrible fight between her parents, see mom throw a big fit.....scream & throw things? Perhaps choosing a time when D9 is not there to see her mom's reaction, would be best?
You can't go home and be a wuss. Know what I mean? If you are going back to reclaim what is rightfully yours, then walk through the front door like a man.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!