How do I dynamicall prevent content from being locked ?

I am content lock enabled and working for all nodes but I am trying to figure out a way to prevent content from being locked if a user has certain criteria or any other condition. I am attempting to do this in a form_alter hook but that does not seem to be doing the trick.

for example:

function my_module_node_form_alter($form, $form_state) {
  if (user->hasSomeCondition() == true) {
  // prevent lock 
  }
}

Is this possible?

Thanks