Get your contract. Read it over. Find out exactly what it spells out with regards to your obligations and theirs in this regard. If your contract allows them t

Get your contract. Read it over. Find out exactly what it spells out with regards to your obligations and theirs in this regard. If your contract allows them to obligate you to work in a physical office, you could be fired with cause. It could allow them to deny you severance. And it's a whole bag of worms concerning unemployment, etc (depending on where you live). So, yeah. Read your contract. Read that email. Do your best to interpret it as literally as possible. Try to determine what it plainly says. Then interpret it in the worst way possible for you. Then interpret it in the worst way possible for them. Then go to a lawyer, explain your situation as simply as possible. You were hired for remote work, they are mandating you go back into the office, you cannot until at least January 2023. Give them a copy of your contract and that email. Let them read it. Then ask what are your options. If you acceptance of the contract was based on the agreement reached in the email, let the lawyer know that as well.