Ripplin said:

Even though the EU doesn't count, doesn't someone find Luke's hand on the ground later on in one of the books?

Vader retrieves Lukes hand and lightsaber from the surface of Bespin. The hand was put into storage along with the lightsaber and used to create a Clone of Luke in "The Last Command" by Joruus C'boath.

However, further retconning now says that the hand was found in the bowels of Cloud City by an Ugnaught AND that Bespin has no surface and is a gas giant... Idiots...

Anyway, this makes that random object falling down from the hole after Luke lands on the weather vane ambiguous at best even though it should be Luke's hand/saber.