Except when you sign a for your house, you are told what you will pay, what the conditions are, and there is a two sided contract including your rights.
Colgan tell you what you will earn, how many days off you have, what your quality of life will be, but don't give you a contract, then make up changes to suit them as they go along. You have no rights when it comes down to it.
So why not change the training contract and elect not to pay? That would seam fair, but I guess the courts would see otherwise.
Oh well, its all a lesson in life isn't it.