I found this story from when the same thing happened a few years back. This is probably the explanation the refs yesterday would give.
http://www.footballzebras.com/2009/10/19/501/
FYI, Wilfork's deliberate elbow to Losman's leg was only worth 12,500. http://articles.boston.com/2007-09-28/sports/29229300_1_patriots-nose-losman-vince-wilfork