Like I said, it became stuck during morning checks. Would you rather the park just puts people on the ride first thing in the morning and hope that there's nothing mechanically wrong with the ride?
I understand this concept quite well, I'm an engineer. All the operating procedures, wind limits, etc, would all be specified for the worst possible case plus safety factor. This will only have happened because there was some freak, momentary combination of factors. Which is why I suggested cold wheels and tracks were a likely factor too; my understanding is that there's a difference in running time on the order of multiple seconds, between the first cycles of the day and the last cycles of the day.
I'd also be very surprised if this wasn't the case.