Hang in there.
What might be therapeutic is to make a list of goals and start working towards them, even if all you can do is get organized for when you leave.
Coursera is excellent.
Try Codecademy.com also. It is an excellent tool for learning programming.
Programming skills, although not exciting, can be learned at home and for entry level positions often don't require a degree, only a demonstration of skill.
You can even gain experience at home by doing websites or other programming work for people in the congregation. Use them to accomplish your goals.
Your parents would also be likely thrown off the scent and encourage this new interest.