Could it have been a pain? Sure.
But disastrous is not a characterization with which I agree.
Worst comes to worst, we would simply not get on the plane to MNL, we'd skip ROR, and then delete the ROR-GUM segment from our next award.
Even though that isn't *terrible* what I think would have ended up happening is that we would have talked our way onto them rebooking us GUM-ROR anyway.