I wouldn't say sellers are exhausted. Rather they met very little resistance to their selling pressure on the way down. Otherwise, trading activity would have been higher. If they had had to work harder, drowning buying pressure, they'd have more reason to be exhausted.
This is not quite the same as saying that sellers are done, which they may well be. If price were now to rise on very little trading activity, i.e., buying pressure encountering little resistance, then you'd be justified in postulating that sellers are done, at least for now, allowing price to float to a level where selling might again be profitable.
--Db