Welcome to the internet? Honestly, filemaker's "find a consultant" directory is public. There would be little to be nothing that filemaker inc can do about people harvesting your info out of the search pages and spamming you to death from it. As you noted, once your on a list, that's most likely passed around to hundreds of different places, making it impossible to remove yourself. Marketers have nothing but time on their hands to comb professional directories and harvest info.
I've received the emails too, duplicates in some cases to different emails I have. There are definitely keyword chains you can write rules on to mark them as suspicious or redirect to your spam folder. Even with the spam, I don't recall ever receiving more than maybe 5 per week. Certainly nothing meriting a call to FMI, or suspect that someone has hacked my info from FMI or someone from FMI maliciously gave out my contact info.
It took me 10 seconds to look up your info, get your phone number, physical address, contact name, and email address. If you don't want this info listed and public, talk to FMI and update your FBA listing. You can setup anonymous email accounts and phone numbers easily, and even go as far as PO Boxes if you need.
Perhaps you should purchase the list and release it here? It's probably just some list they got crawling around the internet for filemaker developers, or it's seeded fake data. I highly doubt it's any of FMI's legitimate licensee lists.