i not under stand with removal station,
what about is the mokey_ removal station?
Image: http://freeimagestocks.com/content/20/grey.png
Mokey is a product that is design to create clean plates by tracking background and foreground objects.
Mokey as a product is not discontinued. Most of its relevant features are now available in mocha Pro:
http://www.imagineersystems.com/products/mochapro