Shattered glass, bleeding woman, uncaring hordes at Arlington station

A Green Line rider, who requested anonymity, wonders just what the hell was going on at Arlington station yesterday afternoon. He writes:

Yesterday at rush hour at Arlington T stop, there was a huge commotion---at the end of the tunnel, just before you can split off to go inbound or Outbound, there was a backed up crowd of people and, for the first time I'd ever seen, both doors were closed. People were trying to open the door, but it was incredibly difficult (it was almost like trying to open a door during a windstorm).

As I edged closer, I realized the reason for the backup: shattered glass everywhere. The right-hand door, it appeared, was broken. Glass all along the floor. Incredibly, people were just walking through, albeit not terribly quickly. Rounding the corner, I came across a second reason for the delay: a woman with blood running down her legs, being treated by a man while her friend looked on in panic. Her friend had a cell phone, but kept saying it wouldn't work. Well, of course not, we were all underground. People kept passing this scene, because hey, "not my problem". Disgusting. So I volunteered to go back and get help. As I went back to get a signal through the long tunnel, T officials ran past me. (The broken glass must have happened literally minutes beforehand.) Soon after that, before I got a signal, a cop was on the scene.

And yet, I've heard NOTHING about this anywhere...have you heard anything? Did the door just spontaneously break? Was this woman pushed through?