Remove modules from Virtuemart Checkout

In creating a new e-commerce site with K2 the Virtuemart checkout was showing all the homepage modules.

After reading a lot of different overly complex solutions on the forums I created this.

//add this code at the top of your template
global $option;
 
//disable modules for virtuemart checkout
 $vmpage= 0;
 if($option == 'com_virtuemart')
 {
  $vmpage= 1;
     $mainWidth = "twoL";
 }

//Then for every module position you need to turn off just add && !$vmpage
//example
if($this->countModules('right')  &&  !$vmpage ){}