Bijou Phillips Alive For Larry Cohen Remake

Time Out have revealed that Bijou Phillips has joined James Murray and Raphael Coleman in the cast of It's Alive, a remake of Larry Cohen's mutant baby classic. Filming is now underway in Bulgaria, probably standing in for New York or some such.

This version is directed by Josef Rusnak who is quoted as saying "Some character elements and situations have been updated to reflect certain changes in society, but the script still preys on the genre's ability to explode the foundation of today's bourgeoisie" which just about made sense.

Why isn't Cohen directing the new version himself?