Should I stay or should I go now?

I have had it with my boyfriend and am planning on moving out. His temper is abnormally bad and I am done with being treated like a child who can go nowhere or talk to anybody when I am actually in my thirty's with two teenage children.

However, today I found out that his kids' mother and her boyfriend stole over $3000 in cash and items from her own parents whom they were staying with. Her parents are pressing charges. She is already on probation- which means she's going to jail. My boyfriend is now on probation himself. And though he is not doing anything at this point to jeopardize the terms of his probation, I worry about leaving now because it is really going to tear up his kids when they find out their mother is going to jail. As far as I'm concerned, they've suffered enough in their short lives and have especially been through more than enough in the last 2 years.

Their dad is really 'not there' for them right now. He's got his head up his butt and can't seem to get it out (the reason I don't want to stick around) and apparently their mother does, too. I worry about the kids. They need some type of anchor/stability in their life and they just don't have it (and probably will never get it) from their parents. They're teenagers (14 and 17) and if I had it my way, I would just pack up and take them with so they could at least get through school, finish being teenagers and not get caught up in their parents' BS. But I know I can't do this.

I really can't stand being here but now I worry about leaving. I figured after I moved out, if my boyfriend wanted to be an ass (which is very likely), I could at least still go through their mother to see the kids and have them over every once in a while. Even though their mom was flaky, she and I were on decent terms. Now I don't know...

Should I stick around? I feel like I should but this man and I are at the breaking point. I'm torn. Please help.