A discussion with my mother reveals that I am distantly related to Rav Elyashiv! My cousin married his great-nephew in March -- although apparently Rav Elyashiv did not turn up to the wedding, because they were recording it on video. (I had just got married the week before and somehow missed all the apparently numerous references to this at the time).
So I'll have no more criticism of him on this site, thank you very much! I always he knew he was infallible.