Just forget about the 'land after', that is a red herring, it has nothing to do with this discussion. With some imagination you can compare this with land and hold short clearances.
But anyway, I'm still waiting on a rationale why it would be unwise to land on a long runway with a disabled aircraft at the very end.
1. You redo your performance calculations with the shorter distances and an obstacle. For legal peace of mind add the 1.67 factor.
2. ATC clears you
3. You land and hold well short
So what is the problem?
Have you never landed on a runway with works going on at the far end? I have landed in STN where the runway was reduced by 50%, from the start.