Progress bar = pausing the playhead?

There is a way with JavaScript.

You would need to create a JS file and include it in the head section of the html.

The JavaScript would be:

var interfaceObj, eventEmitterObj;

window.addEventListener( "moduleReadyEvent", function( e )
{
    interfaceObj = e.Data;
    eventEmitterObj = interfaceObj.getEventEmitter();
initializeEventListeners();
});

function initializeEventListeners()
{
if ( interfaceObj )
{
  if ( eventEmitterObj )
  {
   eventEmitterObj.addEventListener( 'CPAPI_ENDPLAYBARSCRUBBING', endScrub, false );  
  }
}
}

function endScrub()
{
window.cpCmndResume = 1;
}