Good news! I did not die and I rode it twice.
The secondary restraints have been removed, but the primary restraints are much more snug than I remember. They seem to be a few inches lower, which is a very good thing. The load time is longer since they allow the cars to have much more room. The motions seemed much less jerky and the spins were more smooth. Overall, as someone who hates the Primeval Whirl I felt that it was much improved. Whatever they did to the primary restraints made me feel much more secure.
I also have a suspicion that they opened it up for Disney After Hours. It wasn’t opened the other times I’ve been to Animal Kingdom this week and it’s printed on my program.
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BlogMickey wrote that Disney was only trying to get it going for After Hours and whenever "seasonal" is: https://blogmickey.com/2019/10/late...whirl-at-disneys-animal-kingdom-october-2019/