The ruling on one who intends to perform Hajj as a mutamatti' while being the executor of sacrificial animals

Question: A man intends to perform Hajj and makes the intention to be a mutamatti', and he is the executor of sacrificial animals. What is the ruling if he wishes to exit the state of ihram after performing the rites of 'Umrah?

Answer: It is obligatory for him to shave his head or shorten his hair, whether he is an agent or sacrificing on his own behalf, if he is a mutamatti' with 'Umrah before he does any of the prohibitions of ihram.