The first one is that a wheel broke on one of the train and stranded the riders... in the middle of one of the hearline roll! They were taken off the rides with a cherry picker and the car towed by cable to the station.
The second one is due to the braking system and excess speed of the ride! One train did not brake... totally and hitted the next car in the station, luckily, no one was hurt, as the passengers in both cars were seated with the harnesses locked.
To be honest once they get all the problems sorted out with Typhoon they should speed up the lift on this as well. I went on it on Sunday and although the first drop and loop are great and very intense, the rest of the ride just lacks pace and reminds me of a Pinfari Looper to much what with it just keep going round in a rectangle.
I have seen pictures of the car being pulled out of the third inversion by a cherry picker. This incicident DID happen. But I can not confirm that it was caused by a faulty wheel. Neither have I seen people being evacuated from the ride.
Nearly all information about those incidents have been discussed in foreign forums in languages I cannot properly translate (French, Flamic and Dutch). So much Info is lost and remains obscure. (Maybe Absimillard can come to the rescue?!)
The fact that it didn´t make it big in the media (remember: Belgium-coaster stuck upside down-brings back unpleasant memories-makes good news-exploit it!) and that the ride is up and running (at least) since last weekend makes me doubt that anything serious happened.