how long have you been back? they seem to be unnecessarily strict however it seems they are following the protocall of the parentsrole in keeping your "home contract". Were they strict like this before you went to the program? are they involved with the parent seminars still or in touch with old seminar parent friends?
How did you leave the program? Were you pulled or did you graduate?
You might want to assume that they are using the program as a scare tactic to keep you in line, being as you are not exhibiting any acting out... In fact you might want to confront them on using this tactic, tell them that it is a cruel thing to do considering that they are now aware that there is abuse in the program, as if that's what they want for you, to be abused, oppressed and miserable. Don't they realize what a miserable place the program is? What good would send you back do? You aren't doing drugs and you don't need any kind of help, so them taking that action would simply be an action of intended abuse and isolation. Let them know these are the kinds of things that would make it easy for you to take them to court.
I honestly think you should stand up for yourself, tell them about the program, and that their parenting is suffocating and unhealthy and that you intend to get a job to start saving so you can move away for college. If they say No, let them know that this is important to you and they have no viable reason to not allow it, if trust is the issue, then that is THEIR issue not yours and you are old enough to start assuming responsibility for your life. I know that arguing is not the best thing to be doing when going back to the program is at stake but you MUST stand up for yourself, let them know that what they are doing is morally wrong and that you have rights and are willing to seek legal council in order to protect them, and if you get sent back for getting a job then you will never forgive them. I know that sounds harsh, but if I were in your shoes I would never have forgiven my parents if they sent me back. You need to do your best to bring fourth the information about the abuse in these facilities and after they are informed, if they still intend for you to be sent back then you really should file for emancipation.
I don't know, maybe the truth is not something they are willing to hear from their daughter, If you would like, we can send them emails on your behalf. possibly even help you mediate between them. I wouldn't suggest posting their emails on this site tho they might get flooded with hate mail or worse pro programmers trying to get you sent back so if you want me to help in the regard send me a PM and Ill forward the message to a few others who would be able to write to your parents.
I hope you know I feel for you, I can understand the amount of anxiety that a young girl would feel in such a tensious situation. Just know that I am here for you and If you go missing I will do my best to get the proper authorities involved.