hammer immunity is a townie ability. it allows the day to continue normally and we lynch someone else. it could be given to scum, but the chance of that is much lower as it does not really benefit them much.
lynch immunity/stopper ends the day in a no lynch all together. thats mostly a scum ability. if a townie used that they should claim it.
seems pretty clear to me that mafia stopped charlie's lynch yesterday and they are planning something to steer to me today. tpein basically outed himself in the process