well you have several options but all are dependent on your individual situation. If you wouldn't mind answering some questions we might be able to help more accurately.
First, how old are you? Do you have any other relatives you can go live with? or friend's parents who would be willing to take you in? Are you able to hold down a job in case you need to prove that you can support yourself outside of the home?
Second, Are your parents able to be reasoned with? Are they "program parents" as in, still involved or staffing seminars? Have you tried speaking with your parents about your experience at the program, enough to explain to them what WWASP tries to pass off as "therapy" and "treatment"? Have you sat down to talk to them about how they feel about you and your actions as of late and do you think that its possible to come to an understanding and agreement BEFORE it gets to a point that they decide to send you back?
Third, have you evaluated yourself, your actions and are you willing to lay low until your 18? Most times as long as your coming home before curfew and and don't have a reoccurring problem with drugs some parents are able to look the other way with normal adolescent behavior like attitude and low grades. So what exactly is pissing them off about your behavior or actions?
Fourth, Are there any outlets in your community that you can reach out to in order to help with mediation between you and you parents, for instance do you have a guidance counselor at school or a family counselor or even an older sibling to step in and help you communicate with them and them communicate with you?
If the worst really comes to worst, and you feel in danger of being abused or imprisoned without due process against your will you should contact child services, a lawyer and several people (and I mean as many as possible) about this situation that way if you go missing there are people willing to fight on your behalf to have you pulled out of this program. It has happened before, and what most kids don't realize is that you have rights as an American citizen that over-power any parental rights. You have the right to an attorney and that attorney has the right to gain access to you where-ever you may be in the country. The only thing you have to worry about is that you could be sent out of the country, one possibility is to Mexico where they have developed a new WWASP program called Oceanside. Its very possible that if your parents called WWASP right now that is where they would refer you to because they are marketing their newest program. If that's the case, you need to make sure that you have a way to get in contact with the outside world, establish a secret code with one of your family members that when you write them they know you are being abused and need to act to have you extracted ASAP. Mexico is a dangerous and lawless place and I am not being racist when I tell you that some of the Mexicans that live there DO NOT like Americans, especially what they believe to be spoiled little brats. I am speaking from experience, I was in 2 WWASP programs in Mexico and I was severely abused, including physically tortured. You can try to convince your parents not to send you there, and hope for the best, but you NEED to prepare for the worst.