gistfile1.m

NSArray *subviews = [self.view subviews]; 
for (NSInteger i = 0; i < subviews.count; i++) {
	
	UIView *subview = [subviews objectAtIndex:i]; 
	if ([subview isKindOfClass:[UIImageView class]]) { 
		
		NSArray *imageSubviews = [subview subviews]; 
		for (NSInteger j = 0; j < imageSubviews.count; j++) {
			
			UIView *imageSubview = [imageSubviews objectAtIndex:i];
			if ([imageSubview isKindOfClass:[UIImageViewX class]]) { 
				[imageSubview removeFromSuperview]; 
			}
		}
	} 
}