Could I tentatively suggest that a controlled landing, wiping out the (frangible) ILS fence might have saved the a/c?
Are you really saying you're willing to bet on the frangibility of the ILS "fence" in order to save the aircraft? Because if it doesn't "frange"
quickly enough it's may well be entering the Flight Deck.....
Edited to add: If you look at the 27L undershoot, either in real life or even on Google Earth, you'll see that the boundary fence is not far short of the ILS installation (the 09R Loc aerials)...now if you reckon you've got the skills to hop a gliding 777 over the fence ( which from memory is supported 2-3 metre high concrete posts) and then duck down and land it through the ILS installation, all in order to save the airframe, well, I'm extremely impressed.
Anyhow the crew were handed a load of **** at v. short notice, kudos for doing what they did.