To sum up MY opinion.
So maybe the ride should not be shut down during the investigation, but it should be watched very closely until the investigation has conclusive results that say the ride played absolutely no role. Until cause of death is determined, I don't see how we can claim the ride innocent. This is an isolated incident and at best, we could possibly further restrict those few who may be at serious risk, regardless if it's 1 in a million. 1 in 8.6 million is not enough to close the ride forever, but, 1 child is enough to investigate and hope that if there is potential for preventing this from happening again, we should do that.