feelings on moving out...?

Okay so my mother has an abusive husband . he is very violent. he gets in fights with co workers which he got fired for . he got very aggressive with my 14 year old brother and my mom decided she was getting a restraining order against her husband . Well 2 weeks later she's all back huggy huggy with him . and honestly from the past times I've been blamed for calling the cops . I always receive the " we have to waste all this money because of you" talking... but anyway, I want to move out and be on my own. I've decided to move out tomorrow afternoon.  I am 18 now. I'm thinking of disconnecting my phone and have no contact until I'm ready to talk to my mom about it.  I feel like I need advice on this though...