No joke--it happened about two weeks ago: http://dailyiowan.com/2010/10/07/Sports/19256.html
This is one of the complications that can arise from diabetes; as I recall, Parker had to have a couple toes amputated a few years ago.
Hopefully, one of the best defensive coordinators in college football makes a full recovery.
As an aside, it is intriguing to wonder how much the "defensive coaching by committee" mentioned in the article might affect Iowa on the field. (I wrote this last paragraph to meet the 75-word minimum by writing something relevant.)