Kill a workflow wait block

this can be accomplished by a UI action (button) on the wf_executing table

this can either be
server side code:

var url= /sys_trigger_list.do?sysparm_query=nameLIKE' + current.sys_id + '&sysparm_list_mode=grid';
action.setRedirectURL (url);


or client side code:
tick the client box
in the onclick box, enter: go_to_trigger();
in the script box enter:

function go_to_trigger(){
    var grT=new GlideRecord('sys_trigger');
     grT.addQuery('nameLIKE' + g_form.getUniqueValue() );
     grT.query();
     if (grT.next()){
          var url=new GlideURL('/sys_trigger.do');
          alert('redirecting to sys_trigger entry');
            url.addParam('sys_id', grT.sys_id);
           g_navigation.open(url.getURL(), '_blank');
      }

}

note: you may need to enable popups in the browser for the client option

simply navigate to the sys_trigger, and update the 'next action' date field to 30 seconds from now, and job done! watch the workflow free itself up