His "freedom of movement" is self-restricted by his fear that he will have to face justice for acting as an agent of Russian military intelligence to attack America including laundering Russian intelligence into America to upset elections.
He got away with raping a woman completely. Zero justice, zero rehabilitation, zero punishment.
His voluntary embassy stay is related to his fear of facing justice for playing spy games, not for rape.
EDIT: It's disgusting how many people are justifying his lack of justice for raping a woman by saying that his unrelated embassy stay "makes up" for it. What happened to morality? He raped a woman and did not stand trial for it. He received no punishment.
If you did this, make no mistake, you'd have gone to prison. Because you're not an agent government playing spy games. Because protecting you doesn't advance a nations anti-west ideology. Because you're a regular person so you have to face regular person justice.