Ha ha Andy! Yeah, I did wonder why those that had blankets didn't share ...
Overall I agree with Ze. As I said before, I understand PSAT and the rangers don't want to encourage irresponsible hikers to take risks because they (the silly hikers) think they'll be able to shelter in the tram/ranger station as a back-up plan. But these hikers weren't irresponsible, just unlucky, and the ranger's actions seem at best punitive, at worst ill-considered and dangerous. Really, someone could have been hurt/made ill. Yes, that's a risk you take when you're out in the woods, but they weren't out in the woods, they were back in 'civilization' and for no good reason, they were kept outside in freezing temperatures all night. The basic question is, why? Why put people at risk for no real reason?
And I just don't buy the ranger saying, "but I didn't know those people, and there are guns in there!" stuff. I know that formally it's a law enforcement area, but come on! It's a ratty old cabin in the woods, not Fort Apache the Bronx! What, the ranger thought that in the middle of the night some old lady hiker is gonna draw down on him and order him to give up his S'mores? People were gonna tie him up, grab the stash of rifles and demand a helicopter out of there?? Puhleeze. You had a group of scared middle-class middle-aged people who were so law-abiding they wouldn't even break a window. The claim that it was a safety issue is ludicrous. Law enforcement officers rightfully want to protect themselves, but they also have a duty to help people at risk of injury or harm. I think these people qualified, and I think PSAT screwed up.
Edit: on second thought--to be fair--maybe the ranger's concern was not about his personal safety, but about the overall safety of the tram station. I know that since 9/11 everyone is very jumpy about security of tourist spots, and I'm sure every law enforcement person's nightmare is being the one who is careless and unintentionally lets some group of wackos do something terrible. I'm saying maybe this is like the TSA guys who insist on strip-searching the 90 year old in Depends because they don't want to make a terrible mistake. I guess he could have thought that for all he knew they were a group of terrorists who were going to seize the tram station and shoot RPG's down Chino Canyon. Still, unless the ranger's station has shoulder fired missiles in its gun rack, I still can't see this as rational.

Q: How many therapists does it take to screw in a light bulb? A: Only one, but the light bulb has to want to change ...