First.....this post is old, so I realize there is not much activity for the PA category. Anyway, on this point....not so fast...be careful. I don't think you can force your way back in, this is like "possession is 9/10's of the law". If you left, best bet is to do everything you can to work you way back in peacefully. If you get back in or for those who did not leave.....
1. Dont ever leave the home. That is the worst thing you can do....once your out, they claim abandonment.
2. Dont fight, its worthless. Dont talk unless your asking a question that is relevant and invokes thought.
3. Never get angry/break things...always keep your cool. It is very easy for your spouse to claim the need for a "protection from abuse". Dont ever give them the grounds....and if you are abusive, do everyone a favor and leave and get some help.
4. If you have kids, focus on them, go to their school events, conferences, sporting events, school trips...etc. Many men think working all the time to provide is first.....in divorce, its more important to be involved.