OLC has issued a press release stating there was an accident on Raging Sprits on 5/28 at 4:05PM.
Below is my best attempt at a translation of the focus of the press releasee.
Today at Tokyo DisneySea Attraction, Raging Spirits, an incident tool place where minor injuries were incurred.
1. Date and Time
May 28, 4:05 PM
2. Incident Details
A Guest received minor injuries when the safety bar rose up at the loading station as the vehicle started to move. The Guest tried to get out and a minor inury was incured.
Raging Spirits operation is suspended for investigation until further notice.
We extend our deepest apologies to the Guest and everyone inconvenienced by these actions.
Here is the press release in Japanese.