Nope, this is win-win for them. They said interim for a reason. If it doesn't work, they can say "this was the plan all along". If it does work, they can say "

Nope, this is win-win for them. They said interim for a reason. If it doesn't work, they can say "this was the plan all along". If it does work, they can say "this was the plan all along". Either way, he will be paid very well – they just haven't nailed down the exact details yet, as the contract specifically states.