Yeah I mean if the purpose of instant replay is to correct calls an official makes that are erroneous then I don't know why they still allow some calls to stand. They had no business at all calling that play dead. They botched the fumble call and then made it worse by blowing a whistle. Just let them play, if the fumble was returned for a TD then you go back and challenge. No way the ref should be blowing whistles there. Fucking idiots.