I'm going to guess that all these hikers didn't expect it to snow.
I spoke to the younger Meysan Lake guy on the Saturday prior about the trail. DougSr had mentioned to him that I took scouts up there through the snow in June. I couldn't offer much info, but I did tell him snow was expected and we would be racing the weather on our hike up Thor the next day. DougSr also showed him the NOAA forecast on his netbook in the kitchen.
I'm pretty sure at least that guy knew it might snow.
Too bad they didn't know the area or have a decent map - a hungry man can get to Roads End from Forester pass pretty quickly if he makes the left turn down Bubbs................................DUG