Idk I think times have changed and so it's impossible to really compare this incident to any that have gone before it. I get the impression this one will stick, especially with the way the lawyers are pumping stories out every few days and the media are now reporting every little breakdown as if it's a major issue.
I really don't see them removing it purely because of the scale of the investment, the only feasible way I can see that occuring would be if they were able to claim a good chunk of it back from any of the contractors who were responsible for issues with the ride, or the manufacturer for the valleying issues but that's a long shot at best.
What's probably the best course of action would be a re-brand, but a low-key one so that it's literally just a plain coaster, and re-open it alongside a big investment elsewhere in the park that would take attention away from it. Then when it's open and running without incident, maybe add a bit more strength to the new branding?