I can confirm the monorail doors did abruptly shut last Thursday as we waited in line for the express monorail. I did not see anyone seriously injured or stuck in the doors. I did see what appeared to be supervisors talking to people (who I assume may have been struck by the doors as they unexpectedly closed). They did at that time shut the express line down and directed everyone waiting in line to board the ferry. We chose to hop on the resort monorail. Once they got the doors opened on the blue monorail they sent the people onboard it across the platform to board the resort monorail that had arrived.