I have seen them shed flaming chunks all the way to touchdown. I've seen a JT-8 whose turbine blades were burned down to nubs and it was still making power and spewing molten metal out the tailpipe. There is a distinction between blade damage and disc damage. Disc damage is a game stopper.
My previous employer operated over 700 of these engines in scheduled service and I had the privileged of access to the lot where they parked the incoming cores for overhaul. I wish I had taken some pictures.