Indeed, I believe that Zack said "Stop trying to make a revolutionary weapon every day and just wait for it to come to you." It'd be up to Thomas, but as he hasn't responded to this thread, talking about the FCP, I think he's already moved on.
I think it was Snibble and Luke who used the FCP in RP. You two should have realized that it wasn't in use, or at least that debate was still going on about it. I know that this topic pretty much died, but since there was no conclusion, it should have been seen as still up in the air. Luckily, it was nothing major. You can act like your characters never had one, and maybe edit the FCP out and put a standard issue weapon in place. Normally I wouldn't say to edit anything, and it shouldn't be done, but since your characters are carrying around weapons that don't exist, it's an exception. Should the FCP be reworked and accepted, you can go on and put it back, I guess. I'm in no place to order you around, and this isn't an order, just a suggestion to avoid confusion.