Yes, unfortunately, commission is due the broker. He did the work, found the original buyer and handled ROFR.
The seller, by signing the contract, has agreed to the specified terms and the commission. If and when DVD steps in, everything is taken over by Disney. The commission is still due the broker.
If the seller changes his mind, he is still responsible for the commission. There's just no way around it.
We, at The Timeshare Store, wish that wasn't the case. But, as you may recall, Disney will not allow us to go back to the seller with a higher bid once they've made their decision. That's unfortunate as well.
Pat