Rugles - 8:57 pm on Feb 24, 2011 (gmt 0)
Just a guess but perhaps they saw what happened to JC Penny and figured they were not immune to a penalty. Knowing full well they were using black hat techniques they figured they better clean up their act ASAP.
Also, I have no idea why they think University webmasters will do their bidding and drop what they have to do and remove links. Maybe they are offering them 10% as well ;-) .