Disney then purchased Fox and Time Warner sold back its roughly ten percent stake.
It also allegedly stipulated that Comcast could stop funding Hulu if it so decided but such a decision would reduce its ownership stake depending on a variety of factors.
The behind the scenes stuff at Hulu has always been very complicated.
Next TV does a good job of outlining the specifics here, but in short, Hulu launched in 2007 as a partnership between Disney, Fox and NBC Universal, the latest of which was eventually acquired by Comcast.