And if David asked me to breach his own contract, I'd never do business with him again and rent my points with a broker who stuck to their contract - there are other broker services and - as was mentioned - currently FAR more renters than owners with points. Those are not the terms - and we should not set expectations here with David's renters that the contract terms are just - in the words of Captain Barbossa -"guidelines." David or his staff ask me, my answer is no, and I find another broker for my very valuable BWV points next time I'm looking to rent.
The reason I used David to rent my points was because it was a more or less "one and done" deal and the renters problems are not my problems.
Sometimes travel plans change - which is why
travel insurance is offered.
(And part of the reason I wouldn't do this is because I don't want to participate unwillingly in a sublet for profit scheme. Rent points for BWV for October, look for someone who wants that reservation at a 20% markup, have David work with the owner to change all of the names, claiming that unforeseen circumstances have made you have to change your travel plans. Not with my points.)