I agree that it should be possible to allow Wyll to make his own mind up about what to do about his contract and his father. In fact, I think I reported the inability to do so as a bug in my first playthrough as it felt so wrong not to let him decide for himself.
Particularly as the other party members then were all judgy about him breaking the contract, when it was my character's call!
I do hope this is one of the improvements made to Wyll's writing in patch 7.
"You may call it 'nonsense' if you like, but I've heard nonsense, compared with which that would be as sensible as a dictionary!"