@Crash1hd – I'm no AppleScript guy, so I cannot provide some working code. But it should be possible with the transform() method using a transformation matrix.
Also see some ExtendScript scripts about this topic by Marc Autret:
Transforming Spreads in InDesign CS4-CS5!
August 01, 2011
TotalRescale | Last-Minute Layout Adjustment
December 16, 2011