Here’s PROOF that Jim Hoft did erase “UNIV OF IOWA” from that CT scan — the wayback machine has a copy of his post with the unedited image:

@loveheylola @morthobbs @WesleyLowery Hey, there it is - the unaltered version! That proves Hoft altered it himself, after posting it.

— Charles Johnson (@Green_Footballs) August 21, 2014