Seven Blade Fan Issue

when a fan flexes , it is drawn towards the radiator because it is pulling air. it would have to be on backwards and flex the depth of the pulley plus the spacer if it has one. I think it would come apart before it would hit the belt. I would assume if the pump bearings were that bad , the belt would come off before the fan would hit it. this is why we don't ever want our fans less than an 1 1/2" or so from the radiator .... my 2 pennies