Technically not. As it would be 100% incorrect to say that David Prowse cut off Mark Hamill's hand. David Prowse, played a character named Darth Vader who cut the hand off of a character named Luke Skywalker who was portrayed by Mark Hamill.
"Who did Luke Skywalker see upon exiting Yoda's hut on Dagobah." Not, what actor did Mark Hamill interact with after changing scenes from the interior of the Yoda's hut set to the exterior Yoda's hut set.