As you said you got the payment for the campaign why not pay them instead waiting for the BIP91 to occur?
LOL a simple logic you don't understand he is waiting for BIP91 1st August and he will got Bitcoin cash equal to how much he has now bitcoin.he said he hold fund If he will send after 1st august he have equal amount of bitcoin cash.is not a profit ?
he don't have nothing to lose without profit just delay payment more 2 days.