update layout programmatically in magento event observer

Question

I am trying to change the template(view.phtml) of a block (product.info) for product detail page, to do this, I am observing an event (controller_action_l

Answer 1

Why on earth are you doing it this way?

It would be better to use either the local.xml layout file or a layout file declared for a custom module to do this:

    
        
            
                customelayout/product/view.phtml
            
        
    

FYI when a block name is ed, no block with that name will be instantiated for any rendering scope which includes that remove directive.