NPC Polaroid on Pentax 67 II possible?

I have a dedicated NPC Polaroid back on my Pentax 6x7 (1st version) body. I was looking to shoot some Fuji FP 100 & 3000 instant film for fun. Unfortunately the Pentax body seems dead. I would prefer to shoot the Polaroid back on my 67II body but don't see anyway the back coming off. Is it possible?

Thanks!