Eliza Dushku knows the real reason Joss went back to the drawing board to shoot a new Dollhouse pilot (from zap2it):

“And I, for some reason, did not get to wear my leather pants in the first episode, and that was kind of a problem… that was like a deal breaker. We have leather pants for me in the next one.”

After Ellen with an Eliza Dushku quote about Joss Whedon:

“Joss really gets women,” she said. “There’s a woman somewhere deep inside of him!”

TV Guide on Joss’s non-reluctance to work with Fox again:

(Fox Entertainment President Kevin) Reilly says he has seen “no skittishness” in Dollhouse creator Joss Whedon in the wake of his struggle with Fox on Firefly: “I thought, No way is that guy coming back.” But he has really enjoyed working with him. “That is a guy who has earned his reputation.”