Taking advantage of bad contracts can be legal depending on various nuanced circumstances. If the potential payout is lucrative, then it makes sense to consult with legal counsel first.
I am not making a judgement about this specific case.
I am not making a judgement about this specific case.
Here's a simplified hypothetical example to help you understand the legal nuance: I offer all of my money to the first person that can solve 5x5, and I errantly believe that it's a difficult problem to solve.