Maincrop blight advice

My maincrop potato is Setanta. It is still looking pretty healthy but I have had to remove some blight affected leaves from it over the past week. I am going away at the weekend for 5 days and am undecided what to do. Should I leave them be and hope a more serious blight attack doesnt happen while I am away or should I play safe and cut down all the haulm before I go?