The rigs we fly for cinema work have proven to be very reliable with thousands of flights and only a couple of forced landings over a period of many years. It has taken many years to learn and improve on the many weak areas found along the way. Many of these weaknesses were caught just in the nick of time. Having said that, as I said before, I would have declined this gig. The rig flown here did not benefit from extensive flight testing and the ops paid the price. They will most likely lose their insurance and now are branded with questionable reliability. If someone would have been hurt, it would have made the front page.
In the professional world, a root cause analysis would follow such an incident. The primary recommendation from this event would be to not fly near large crowds. The secondary would be improve equipment reliability. Take this as a close call due to poor judgement and a good lesson learned.
Our team has a saying "hope is not a plan".