Any way you could sabotage? Train it well, but with some systematic shortcoming that is hard to spot but would become bad at a scale? Ideally something that could be written off as a honest mistake on your end.
Obviously never talk about it or admit to it, as it's probably poorly received. But I think it's the most ethical option if you can think of a good way of doing it. You'd get the money, and if you do it well you could fight the system from within.
Obviously I don't know enough about this specific case to know if it's feasible at all.