To be honest, I would have pulled it too. Fitna is going to become such a hassle that I wouldn't want to be hosting it either.

In the case of Wilders; Netsol apparently got reports (even the Dutch government is trying to ban the movie) that it would contain stuff that could potentially be illegal in The Netherlands. They then asked for a copy of the movie or guarantees that it would not violate the law, and when they didn't receive those guarantees they pulled the site.