Zane beat the living hell outta those side delts to create the illusion of width. His side caps are still the envy of bodybuilders. He says he can barely move his delts because of all the overuse and excess.
He felt that the appearance of the side delts was one of the most important aspects of a complete physique. If he had it to do all over again, he would have used less weight, more pump, and taken more rest.