The exact thing happened to me this week.
I decided that life in the particular salon i was in wasnt as enjoyable as i hoped it would be so i decided to leave.
I have set up at home, although im not going mobile as you are, but i managed to keep nearly all of my clients. I worked from home before moving to the salon and i find it so much more comfortable and im in total control of everything.
Im also a little worried but im keeping a positive attitude and making the best of my situation, im going to make up some flyers and put them out and also taking an add in the local paper, I also have my business cards in a few local shops and that brings me a few clients as well.
As Ruth said its not professional to bad mouth your old salon, i know its hard my poor tounge has a hole in it LOL but im just telling all my clients that my reason for leaving was that it was difficult managing full time work with a family so i have decided to come back home, all my clients are happy with that and like my little set up at home
I wish you lots of luck and hope things go well for you at home