logs would show "BV deleted all posts by IP hash (hidden)
and if that IP created the bread, the bread is deleted. no special message.
i think he forgot he baked the bread and when he went to clean up his posts, he accidentally nuked the bread. after a while it came back (undeleted) but apparently missing some BV posts. an anon had graphic caps yesterday, another anon had archived. might be interesting to compare.