There's an argument to be made that this is a constructive dismissal, and would thus qualify for any benefits that a termination would entail, but I'm sure that type of legal wrangling is not what the people at Schwab will want to deal with.
If it were me, I would simply continue working from home until my access and/or paycheck were cut off.
If it were me, I would simply continue working from home until my access and/or paycheck were cut off.