The park will likely be keeping it until enough is enough, after numerous weeks/months of downtime I wouldn't think the park will want to damage their integrity by opening rides that could potentially (Noted, previous encounters of have been seen to before opening) cause H&S violations.
If & when another crack appears I strongly believe the park will say this is the end. It's one thing that it happened once in the first place but numerous times in consecutive years is actually somewhat traumatising.