Indy Whipless?

There are rumours that Harrison Ford is threatening to walk off the Indiana Jones IV movie because they won't let him use a real whip, saying it's unsafe (a CG whip would be used). To me, it sounds made up... but at the same time, crazy enough to be true.

The source is not authoritative though, and what the truth of the matter is remains to be seen.

(Update: Having seen the film over a year later, one wishes he had walked... that was awful - Murk)