ABS are usually ASIL D rated (ISO 26262) which means they have an on board watchdog, redundant processor with voting system, etc. so this failure mode (locked up and still sending) is considered impossible by design.
sure, but I would think some special case when we expect car to have 0 speed to not request any torque from its motor.
IMO three is no case where car should request any torque when been in neutral