Barbaro reports for the NYT, so I am wondering..
edit: two more reporters
Sarah Boxer ‏@Sarah_Boxer (CBS News)
http://twitter.com/Sarah_Boxer
"As @MittRomney speaks, many people- cold, old, w/children... All rushing out of barricades, right by press riser"
Jackie Kucinich @JFKucinich (USA Today)
http://twitter.com/JFKucinich
"People are literally sneaking out gates now bring told they can't leave way pic.twitter.com/uvlPBys5
There are several people here at Pa. rally who want to leave and aren't being let out.
Man just pulled me aside and said "My son is on the verge of hypothermia" just as staffer starts letting people out a few at a time."