I am not aware of a script that makes all of the reviews fail, but I think there are better methods than that 
Hereâs one of them:
You can use the Ultimate Reorder script which allows you to order your reviews by level. This way, you can do the reviews of the lowest levels first which has two benefits: you probably know these items the best (which is probably good for your motivation), and they will probably be in the highest levels, that means they will keep out of sight for quite a while 
(Because tbh if you could use a script to fail all your items, you would get a big percentage of them back the next day, so nothing gained reallyâŠ)
You could first tackle the, say, lowest 5 levels, until all reviews in these levels are cleared. And if you want you can keep doing that for a few days, until the load in those levels gets manageable. Then you might approach the next three or four levels and slowly work your way up until you have reviewed all of them.
Granted, that might take you a week or three, but I think you will get more out of it than failing all items and - bam! - getting them back the next day 
BTW of course a friend told me about that method. I have never been in a situation with 1000+ reviews, I swear 