sold?
I'm affraid it won't be possible to cut the PCB circuitry in two parts!Get outta here !!
I think Faxinadu that you can ask Oakley Modular to know if they want to give/sell you at least the Gerber plan to produce the PCB, and if more people want to own this filter, you can ask for a bench production of the PCB at a PCB engraving service on the web, that will cost I think about 80 Euros for each board (and about the same for the electronics parts)...
I would be happy to help anyone to build his own Filtrex
From my side, I'm happy to announce that the bucks of the trade will serve to produce a new Filter based on the CEM3378 chip and a lot of modulations by a MIDIbox...
You will find here the plan for a full featured MIDIbox filter, (my upcoming project will be more simple and cheaper) , but if you're looking for unique device, look here

http://www.soundandbreakfast.org/divers/MBfilter.html
If someone is interrested by building such a complicate filter, sure I will finish all the prog and config to make it work, from my side, it's a too costly project!