Creating an action to split a file into two halves, and save both halves as new files. Can be run using the Batch command to automate it and run on a folder of files.
Ideally once you run this to split all the files, you would then go back to bridge and rename them so that the page numbers are correct. This should be really easy, just go to Tools >> Batch Rename, add a text field and put 'page-' and then do a sequence number with 2 digits (at least) and set the starting number at 1 or 2 depending on whether or not the first page is a single spread (right page only) or a double spread.
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