Re-washing the greens won’t do much. The amount of agitation required to actually remove the microbes would pretty much destroy the lettuce. Triple washed greens probably don’t have any residual soil, it’s more that coliform bacteria are ‘sticky’. I’ll agree it’s plenty gross that there are high levels of coliforms on the lettuce. But telling people to wash the lettuce is just a placebo. I think a better focus would be to look at the water that is being used in the fields. And to face the fact that, living on earth, we are going to be surrounded with coliforms 99.99999% of the time.