I think Dan is right. No matter how "ridiculous" you perceive the contract to be, it has to be questioned how ridiculous was the person who accepted it ?
However unpalatable, the fact is that the individual is required to enter into what is a defacto loan agreement, because that individual is otherwise unqualified to take up the post. As with any loan agreement if you don't like the terms then walk away. Most loan agreements will let you walk away at any time simply by satisfying the agreement. If you can find a better deal transfer to it. This would appear to be the case whether you are buying a new car, cosmetic surgery or an airliner type rating.
It is not much use signing up to a poor deal and then regretting it later or hoping that your wishful interpretation of the law might allow you to escape the agreement you willfully entered into. Generally the requirment to be a commercial pilot would suggest that an individual is an adult with at least average intelligence, and as such would be able to understand the terms and conditions of any loan agreement they choose to enter into.